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   8074篇
  免费   255篇
  2020年   73篇
  2019年   115篇
  2018年   425篇
  2017年   370篇
  2016年   417篇
  2015年   154篇
  2014年   147篇
  2013年   2202篇
  2012年   179篇
  2011年   347篇
  2010年   326篇
  2009年   190篇
  2008年   209篇
  2007年   258篇
  2006年   109篇
  2005年   131篇
  2004年   93篇
  2003年   66篇
  2002年   86篇
  2001年   93篇
  2000年   86篇
  1999年   86篇
  1998年   77篇
  1997年   92篇
  1996年   59篇
  1995年   57篇
  1994年   55篇
  1993年   65篇
  1992年   66篇
  1991年   50篇
  1990年   52篇
  1989年   51篇
  1988年   58篇
  1987年   71篇
  1986年   51篇
  1985年   83篇
  1984年   78篇
  1983年   102篇
  1982年   89篇
  1981年   86篇
  1980年   85篇
  1979年   80篇
  1978年   77篇
  1977年   95篇
  1976年   70篇
  1975年   72篇
  1974年   42篇
  1973年   49篇
  1972年   41篇
  1971年   43篇
排序方式: 共有8329条查询结果,搜索用时 31 毫秒
31.
The technology of Roman harbours   总被引:2,自引:0,他引:2  
  相似文献   
32.
Village societies in rural Fiji have often been studied in terms of a dichotomy between traditional village communalism and independent galala individualism. This was especially so in the 1960s, at a time when government efforts to promote individualist Fijian agriculture led to the creation of a number of resettlement schemes based on the peasant model. Social scientists hailed the galala movement as a fundamental and progressive process of change in Fijian society. However, recent evidence and the demise of regulations which institutionalised galala point to the present lack of distinction between galala and villagers. Indeed, there is considerable confusion within some villages over how galala should be defined and it seems to be much more a matter of spatial location of residence than any attitudinal or economic break with communalism.  相似文献   
33.
34.
The decisions of seventy household members during a residential search for a new home for owner-occupancy were measured in a search simulation game. Their decisions both to inquire about homes during the search, and to select a new home at the termination of the search, were more accurately predicted by a heuristic decision-making model than by a rational model.  相似文献   
35.
The soluble and exchangeable ions for a soil profile from the Roonka archaeological site. Lower Murray Basin, South Australia, are compared with the total elemental content of the soils. Since the chemical composition of post-mortem ionic substitution phases and secondary minerals in archaeological bone will depend on the availability of ions to the soil solution under field conditions, it is suggested that models addressing diagenesis in bone employ soluble and exchangeable ions rather than total elemental soil data.  相似文献   
36.
37.
38.
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   

39.
Models based on hazard functions are used to analyze spatial trends in the distance intervals separating point locations. The proportional hazards model, which has been widely applied to analyze intervals of time, is used to investigate variation in the spacing of settlements in Nebraska. This model allows spatial trends in the intervals between settlements to be investigated under very general conditions regarding the interdependence of settlement locations and permits the coordinate locations of the intervals to be treated as spatially varying covariates. An empirical analysis reveals an East-West trend in the spacing of settlements.  相似文献   
40.
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