全文获取类型
收费全文 | 4359篇 |
免费 | 169篇 |
出版年
2020年 | 68篇 |
2019年 | 95篇 |
2018年 | 129篇 |
2017年 | 137篇 |
2016年 | 137篇 |
2015年 | 101篇 |
2014年 | 104篇 |
2013年 | 1097篇 |
2012年 | 138篇 |
2011年 | 132篇 |
2010年 | 110篇 |
2009年 | 149篇 |
2008年 | 171篇 |
2007年 | 119篇 |
2006年 | 87篇 |
2005年 | 55篇 |
2004年 | 61篇 |
2003年 | 56篇 |
2002年 | 52篇 |
2001年 | 89篇 |
2000年 | 61篇 |
1999年 | 60篇 |
1998年 | 41篇 |
1997年 | 27篇 |
1996年 | 48篇 |
1995年 | 45篇 |
1994年 | 37篇 |
1993年 | 46篇 |
1992年 | 28篇 |
1991年 | 34篇 |
1990年 | 28篇 |
1989年 | 39篇 |
1988年 | 38篇 |
1987年 | 41篇 |
1986年 | 37篇 |
1985年 | 41篇 |
1984年 | 49篇 |
1983年 | 58篇 |
1982年 | 44篇 |
1981年 | 40篇 |
1980年 | 45篇 |
1979年 | 36篇 |
1978年 | 48篇 |
1977年 | 42篇 |
1976年 | 52篇 |
1975年 | 28篇 |
1974年 | 27篇 |
1973年 | 28篇 |
1972年 | 30篇 |
1971年 | 30篇 |
排序方式: 共有4528条查询结果,搜索用时 15 毫秒
991.
992.
993.
994.
This article compares the recent Prussia Year 2001events marking the 300th anniversary of the founding of thePrussian state with the famous Prussia Wave ofthe late 1970s and early 1980s in order to evaluate the evolvingstatus of Prussia in postwar German memory. It asserts thatGermans have largely abandoned their formerly polarized viewsof Prussia and have increasingly arrived at a more balancedview of its historical legacy. In developing a more normalizedview of the Prussian past, Germans have demonstrated that difficulthistorical legacies may, to some degree, in fact, be mastered.At the same time, the article shows how the seemingly successfulconfrontation with the Prussian past remains burdened by theenduring effort to confront the legacy of the Third Reich. 相似文献
995.
996.
997.
Because medical records of individuals contracting measles were not kept in northwest lceland for epidemics before 1904, the spread of the disease in 1846 and 1882 has been traced from notifications of death recorded in burial registers and census returns. Using this evidence, a time-space matrix of measles deaths has been constructed and the dynamics of the diffusion process through a necklace of small communities strung along the coast has been analysed. In each of the three epidemics the mortality curve corresponded closely to an S-shaped logistic model, each new epidemic passing through the area more rapidly than its predecessor. The operation of a neighbourhood effect from a single point of introduction implies that the disease should move in a wave-like form through the area. Whereas the 1882 epidemic advanced steadily as a wave-front progression characteristic of the neighbourhood effect, those of 1846 and 1904 had strong spatial biases towards the parish of Eyri. The intense localization of the outbreaks in 1846 and 1904 appears not to be related directly to distinctive features in the demography or form of the settlement. In 1904 a confirmation service held in Eyri church brought many victims into contact with a measles carrier, but no special circumstances have been reported or can be deduced for 1846. 相似文献
998.
999.
1000.