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   5601篇
  免费   211篇
  2020年   74篇
  2019年   85篇
  2018年   129篇
  2017年   137篇
  2016年   155篇
  2015年   123篇
  2014年   110篇
  2013年   1507篇
  2012年   185篇
  2011年   172篇
  2010年   156篇
  2009年   191篇
  2008年   200篇
  2007年   165篇
  2006年   130篇
  2005年   77篇
  2004年   72篇
  2003年   70篇
  2002年   65篇
  2001年   105篇
  2000年   74篇
  1999年   80篇
  1998年   48篇
  1997年   40篇
  1996年   61篇
  1995年   58篇
  1994年   46篇
  1993年   61篇
  1992年   42篇
  1991年   53篇
  1990年   35篇
  1989年   46篇
  1988年   48篇
  1987年   57篇
  1986年   54篇
  1985年   56篇
  1984年   62篇
  1983年   73篇
  1982年   63篇
  1981年   56篇
  1980年   58篇
  1979年   49篇
  1978年   61篇
  1977年   55篇
  1976年   66篇
  1975年   42篇
  1973年   39篇
  1972年   36篇
  1971年   35篇
  1969年   35篇
排序方式: 共有5812条查询结果,搜索用时 5 毫秒
11.
12.
13.
14.
15.
16.
An investigation of three Andean towns in their regional setting forms the basis for an assessment of urban-rural demographic differences. The towns are found to have been ethnically distinct, with a larger proportion of whites than the mainly Indian rural areas. The urban populations also had a larger surplus of women, lower average marriage ages for women but lower proportions married, a higher illegitimacy rate and a slightly older age structure. Trends in urban districts differed from those in rural areas. The towns suffered major population losses, and their share of the regional population fell from nearly 10% in 1778 to around 5% in 1841. The factors affecting population trends are examined in order to identify those which had a differential urban-rural impact. Earthquake and warfare were of key significance. In a regional context of economic depression and population stagnation, these two catastrophes instigated a major urban recession. The three towns shared in the urban decline experienced in many parts of Latin America, but their recession was particularly pronounced owing to the impact of catastrophes.  相似文献   
17.
Mapping population data from zone centroid locations   总被引:1,自引:0,他引:1  
The author describes the difficulties associated with the use of maps to represent census data. "A review of the problems associated with population mapping is followed by a discussion of [an alternative method known as] a raster method for handling census data, based on population-weighted centroids, and its implications for GIS "[geographic information systems]." The geographical scope is worldwide, with an example provided using data for Wales.  相似文献   
18.
Reviews     
Babi and Baha'i Religions: From Messianic Shi'ism to a World Religion, by Peter Smith, Cambridge University Press, London, New York, New Rochelle, Melbourne, Sydney 1987, pp.xiv, 243.

Panj Vaqf‐namah, by Mahmud Afshar Yazdi, (Five Endowment Deeds), Tehran Foundation for Mahmud Afshar Yazdi's Endowments, 1363/1984. Iraj Afshar and Karim Isfahaniyan, eds., Namvarah‐yi Doktor Mahmūd Afshar Yazdi (Mahmud Afshar Yazdi's Festschrift), 4 vols., Tehran: Foundation for Mahmud Afshar Yazdi's Endowments, 1364/1985–1367/1988.

Bulles et Sceaux sassanides de diverses collections, by Philippe Gignoux and Rika Gysclen, Paris: Sludia Iranica, Cahier 4, Association Pour l'avancemeni des études iraniennes, 1987, 306 pp, 23 plates.

Iran and Iraq at War , by Shahram Chubin and Charles Tripp, Boulder, Colorado: Westview Press, 1988.

The Tragedy of Sohrab and Rostam, from the Persian National Epic, the Shahnameh of Abol‐Qascm Ferdowsi, translated by Jerome W. Clinton, Seattle: The University of Washington Press, 1988, xxv + 190 pages, $25.00 cloth $12.50 paper.

Persian Carpets , by Michael Craig Hillmann, Austin: University of Texas Press, 1984, 98 pp. index to p. 112.

Resurrection and Renewal: The Making of the Babi Movement in Iran, 1844–1850, Abbas Amanat, Ithaca & London: Cornell University Press, 1989, pp. xv.+ 461, no price indicated.

Iran min al‐Dakhil, (Iran From Within), by Fahmi Huwaydi, Cairo: Markaz al‐Ahram li al‐tarjuma wa al‐nashr, 1987, 405 pp.

Woven From the Soul, Spun from the Heart: Textile Arts of Safavid and Qajar Iran, 16lh‐19lh Centuries , edited by Carol Bier, Washington, DC: The Textile Museum, 1987.

Summon Up Remembrance, by Marzich Gail, Oxford: George Ronald Books, 1987, 295 pp., appendix, bibliography, $14.95.

Iran and The United States, A Cold War Case Study, by Richard W. Cottam, Pittsburgh: University of Pittsburgh Press, 1988. $12.95 pb.  相似文献   

19.
20.
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