首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   9949篇
  免费   417篇
  2020年   137篇
  2019年   212篇
  2018年   246篇
  2017年   307篇
  2016年   335篇
  2015年   241篇
  2014年   230篇
  2013年   2940篇
  2012年   275篇
  2011年   275篇
  2010年   337篇
  2009年   296篇
  2008年   259篇
  2007年   248篇
  2006年   240篇
  2005年   146篇
  2004年   132篇
  2003年   140篇
  2002年   148篇
  2001年   152篇
  2000年   122篇
  1999年   125篇
  1998年   98篇
  1997年   96篇
  1996年   91篇
  1995年   96篇
  1994年   96篇
  1993年   100篇
  1992年   97篇
  1991年   84篇
  1990年   69篇
  1989年   76篇
  1988年   80篇
  1987年   79篇
  1986年   79篇
  1985年   105篇
  1984年   90篇
  1983年   129篇
  1982年   97篇
  1981年   100篇
  1980年   86篇
  1979年   94篇
  1978年   94篇
  1977年   78篇
  1976年   91篇
  1975年   81篇
  1974年   72篇
  1973年   61篇
  1972年   61篇
  1970年   50篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
51.
52.
53.
Book reviews     
Peter Edwards with Gregory Pemberton. Crises and Commitments: The Politics and Diplomacy of Australia's Involvement in Southeast Asian Conflicts 1948–1965. Sydney: Allen & Unwin, in association with the Australian War Memorial, 1992. xix + 515 pp. $45.00.

J.D.B. Miller and RJ. Vincent (eds). Order and Violence: Hedley Bull and International Relations. Oxford: Clarendon Press, 1990. vii + 220 pp. $55.00.

Carl Bridge (ed.). Munich to Vietnam. Melbourne: Melbourne University Press, 1991. 237 pp. $24.95.

Gary Brown. Breaking the American Alliance. Canberra Papers on Strategy and Defence No.54, 1989. 171pp. $17.00.

G. Withers (ed.). Commonality and Difference: Australia and the United States. Australian Fulbright Papers No.1. Sydney: Allen & Unwin for the Australian‐American Educational Foundation, 1991. 138 pp. $19.95.

John S. Gibson. International Organizations, Constitutional Law and Human Rights. New York: Praeger, 1991. xvii + 265 pp. $US45.00.

J. Ronald Engel and Joan Gibb Engel (eds). Ethics of Environment and Development: Global Challenge and International Response. Tucson: University of Arizona Press, in association with the IUCN, 1990. xv + 264 pp. $US29.95 (cloth), $US14.95 (paper).

Stephen Ryan. Ethnic Conflict and International Relations. Aldershot: Dartmouth Publishing, 1991. xxviii + 200 pp. No price given.

K.M. de Silva and R.J. May (eds). Internationalization of Ethnic Conflicts. London: Pinter Publishers for International Centre for Ethnic Studies, Sri Lanka, 1991. x + 272 pp. $84.25.

Robert C.R. Siekmann. National Contingents in United Nations Peace‐Keeping Forces. Doedrecht: Martinus Nijhoff, 1991. xv + 229 pp. $US82.00.

Mara R. Bustelo and Philip Alston (eds). Whose New World Order? What Role for the United Nations? Leichhardt: The Federation Press, 1991. xiv + 157 pp. No price given.

H. Brauch and R. Kennedy (eds). Alternative Conventional Defense Postures in the European Theater: The Impact of Political Change on Strategy, Technology, and Arms Control. New York: Crane Russak; Basingstoke: Taylor and Francis, 1992. xxi + 279 pp. £35.00.

Robert F. Miller (ed.). The Development of Civil Society in Communist Systems. Sydney: Allen & Unwin, 1992. iv + 187 pp. $19.95.

David W. Hunter. Western Trade Pressure on the Soviet Union. An Interdependence Perspective on Sanctions. Basingstoke: Macmillan, 1991. xii + 163 pp. £40.00.

Paul Hainsworth (ed.). Breaking and Preserving the Mould: The Third Direct Elections to the European Parliament (1989) — the Irish Republic and Northern Ireland. Belfast and Coleraine: Policy Research Institute, The Queen's University of Belfast and the University of Ulster, 1992. v + 223pp. £9.95.

Yue‐man Yeung and Xu‐wei Hu (eds). China's Coastal Cities: Catalysts of Modernization. Honolulu: University of Hawaii Press, 1992. xvi + 330 pp. $US38.00 (cloth).

Freedom in Exile. The Autobiography of the Dalai Lama of Tibet. Cardinal Books, 1991. 308 pp.

Vo Nhan Tri. Vietnam's Economic Policy Since 1975. Singapore: Institute of South East Asian Studies, 1990. xi + 253 pp. $S42.50 (cloth), $S32.00 (paper).

Robert Hopkins Miller. The United States and Vietnam 1787–1941. Washington, DC: National Defense University Press, 1990. ix + 234 pp. No price given.

Judith A. Stowe. Siam Becomes Thailand: A Story of Intrigue. Honolulu: University of Hawaii Press, 1991. xii + 394 pp. $US39.00 (cloth), $US16.95 (paper).

Salim Said. Genesis of Power. General Sudirman and the Indonesian Military in Politics 1945–49. North Sydney: Allen & Unwin, 1992. xxi + 185 pp. $24.95.

Burhan Magenda. East Kalimantan: The Decline of a Commercial Aristocracy. Ithaca: Cornell Modern Indonesia Project, Cornell University, 1991. viii + 113 pp. $US11.00.

Khong Kim Hoong. Malaysia's General Election 1990: Continuity, Change and Ethnic Politics. Singapore: ISEAS, 1991. 54 pp. $US5.00.

Stephanie Lawson. The Failure of Democratic Politics in Fiji. Oxford: Clarendon Press, 1991. vii + 307 pp. $90.00.

Asesela Ravuvu. The Facade of Democracy: Fijian Struggles for Political Control 1830–1987. Suva: Reader Publishing House, 1991. xii + 106 pp. $15.00.

William Sutherland. Beyond the Politics of Race. An Alternative History of Fiji to 1992. Political and Social Change Monograph No.15, Department of Political and Social Change, Australian National University, 1992. vii + 251 pp. $16.00.

Sue Rabbitt Roff. Overreaching in Paradise: United States Policy in Palau since 1945. Juneau, Alaska: The Denali Press, 1991. ix + 245 pp. No price given.

Gary Smith. Micronesia: Decolonisation and US Military Interests in the Trust Territory of the Pacific Islands. Canberra: Peace Research Centre, Australian National University, 1991. ix + 131 pp. $12.00.

Robert Aldrich (ed.). France, Oceania and Australia: Past and Present. Department of Economic History, University of Sydney, 1991. 203 pp. No price given.

Stephen Henningham. France and the South Pacific; A Contemporary History. Sydney: Allen and Unwin,1992. xvii + 292 pp. $24.95.

R. Briscoe, G.S. Nair and A. Sibbald. Enterprise Support Organizations for the South Pacific: Problems and Proposals. Honolulu: Pacific Islands Development Program, East‐West Center, 1991. xi + 89 pp. $US8.00.

Euan Fleming and Hugh Coulter (eds). Agricultural Export Marketing in the South Pacific: The Future Role of Marketing Authorities. Canberra: National Centre for Development Studies, Australian National University, Pacific Policy Paper 8, 1992. xii + 255 pp. $25.00.

M. Thea Sinclair and M.J. Stabler (eds). The Tourism Industry: An International Analysis. Wallingford: C.A.B. International, 1991. xi + 244 pp. £30.00.

D. Harrison (ed.). Tourism and the Less Developed Countries. London: Belhaven Press, 1992. xiii + 186 pp. £35.00.  相似文献   

54.
55.
Seleucia Pieria: an ancient harbour submitted to two successive uplifts   总被引:1,自引:0,他引:1  
Historical sources ascribe the foundation of Seleucia (Seleukeia) Pieria to Seleucos I Nikator, shortly before the foundation of Antioch in the late 4th century BC. The Seleucia Pieria site seems however to have been inhabited earlier, perhaps from around 700 BC, possibly by a Greek population under an Assyrian ruler. The city became of considerable military importance during the wars between the Ptolemies and the Seleucids; it was occupied by the Romans in the 1st century BC, but had practically disappeared in the 6th century AD.
Geomorphological surveys in the area have revealed the existence of elevated marine notches and rims bioconstructed by vermetids, oysters and calcareous algae, which occasionally erode or intersect the archaeological sites, showing that two rapid land uplift movements, probably of seismic origin, took place during the late Holocene. The first movement, which occurred about 2500 ± 100 years bp, was the strongest one and caused a local vertical displacement of about 1.7 m, which may have severely affected the earlier Greek settlement. Though several earthquakes are reported to have occurred in the area during the following ten centuries, none of them seem to have been strong enough to cause significant vertical displacements. The second movement occurred around 1400 years bp, probably in May 526 AD, when a great earthquake followed by tsunami waves is known to have caused devastating damage in Antioch and Seleucia. According to geomorphological data supported by several radiocarbon dates, the earthquake was accompanied by a 0.7 to 0 8 m upheaval. This seismotectonic event also caused a rapid silting of the Seleucia Pieria closed harbour basin and entrances, thus preventing its further use.  相似文献   
56.
In the past decade Tobler has provided an innovative cartographic presentation of migration flows. The central theme of this research has been to utilize detailed migration data to reveal the underlying structures of migration flows. Even though the analyses are not explanatory models of migration exchanges, the application of these techniques to migration flows over time and across different spatial scales provides a visual generalization of often extremely complex flows. The application of his techniques at two spatial scales for the Netherlands illustrates both the strengths and weaknesses of migration force fields for the analysis of migration.  相似文献   
57.
ABSTRACT. The dynamic relationship between sectoral value added and regional economic growth is analyzed using a stochastic intersectoral model estimated by ordinary least squares and linear systems techniques. A state-space portion of the model identifies the time element of sedoral value added. Dynamic multipliers, tracing the temporal path of regional growth, are calculated for the state of Georgia over the period 1963–1986. This application shows that the impacts of sectoral shocks can follow cyclical as well as monotonic patterns and that the direction and magnitude of the impact may change over time.  相似文献   
58.
59.
Charcot-Marie-Tooth disease is a hereditary motor and sensory neuropathy first described in 1886. Our increasing knowledge of this disease correlates well with the development of methods used in neurology over the past 100 years. Although its physiopathology and treatment is still not fully understood, current developments in techniques are opening the way to future discoveries. We have divided its history into three theoretical periods: the first from 1886 to 1956, which was devoted to clinical and pathological study of the disease; the second from 1956 to 1982, which saw the development of electromyography in the investigation of neuromuscular diseases; and the last and current period based upon genetic research, using the methods of molecular biology.  相似文献   
60.
ABSTRACT. The proposition that a decentralized structure of local governments can effectively constrain public sector growth is empirically investigated. Data on Swedish municipal sector size for the 1942–87 period are analyzed within the context of a median voter model. The results indicate that decentralization, measured by the number of units of local government serving a given population, constrains the influence of institutional factors (e.g., rent seeking, bureaucracy) on local budgets as long as these units exceed some minimal threshold size. The findings support the view that communities should be given the flexibility to determine their own ideal pattern of local governments.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号