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   79165篇
  免费   3317篇
  国内免费   5篇
各国政治   4591篇
工人农民   3167篇
世界政治   6576篇
外交国际关系   3957篇
法律   40947篇
中国共产党   17篇
中国政治   795篇
政治理论   21482篇
综合类   955篇
  2021年   438篇
  2020年   1203篇
  2019年   1562篇
  2018年   1858篇
  2017年   2139篇
  2016年   2333篇
  2015年   1879篇
  2014年   2128篇
  2013年   10717篇
  2012年   1915篇
  2011年   2102篇
  2010年   2001篇
  2009年   2213篇
  2008年   2124篇
  2007年   2126篇
  2006年   2261篇
  2005年   2167篇
  2004年   2021篇
  2003年   1852篇
  2002年   1875篇
  2001年   2279篇
  2000年   1960篇
  1999年   1708篇
  1998年   1258篇
  1997年   1058篇
  1996年   1053篇
  1995年   1012篇
  1994年   1032篇
  1993年   1033篇
  1992年   1244篇
  1991年   1292篇
  1990年   1247篇
  1989年   1243篇
  1988年   1246篇
  1987年   1214篇
  1986年   1263篇
  1985年   1296篇
  1984年   1118篇
  1983年   1144篇
  1982年   970篇
  1981年   913篇
  1980年   726篇
  1979年   846篇
  1978年   677篇
  1977年   590篇
  1976年   536篇
  1975年   509篇
  1974年   540篇
  1973年   510篇
  1972年   441篇
排序方式: 共有10000条查询结果,搜索用时 312 毫秒
991.
Herein presented are current concepts regarding the sudden infant death syndrome (SIDS) including a definition of the phenomenon and a discussion of its present role in post-neonatal mortality in this country, a few of the recently published results (both clinical and morphological) of the NICHD Cooperative Epidemiologic Study, a report on the status of the so-called "Tissue-Markers for Hypoxia" and a summary of other recent morphologic observations.  相似文献   
992.
A study of non-commercial accidental water transport (boating) fatalities was performed on the case files of the Office of the Medical Examiner of Metropolitan Dade County in Miami, Fla., during the years 1980-1984. A total of 23 cases were collected and analyzed as to the age, race, sex, and the cause of death of the victim along with the blood alcohol content and the Urine EMIT drug screen at autopsy. Furthermore, the type of boat involved, the geographic locale, the time of the incident, the reason or risk factor for the incident, and the scene circumstances were also noted. Commonly, one is dealing with a male population below the age of 30 years who die of drowning. In approximately half of the cases alcohol is detected. The scenario involves "small" boats or canoes in the Atlantic Ocean or in canals in the afternoon or evening. Inexperience in boating/or stupidity plays a key role. A discussion ensues concerning recommendations designed to avoid such tragedies.  相似文献   
993.
Adolescent incest sexual perpetrators seen at an out-patient clinic were interviewed regarding demographic characteristics and occurrence of deviant and nondeviant sexual behaviors. Results indicate that subjects (1) committed more sexual crimes than they had been arrested for, (2) reported a very early onset of sexual behavior, (3) had additional DSM-III psychiatric disorders, and (4) reported previous sexual victimization. Recommendations for future research are made.  相似文献   
994.
995.
996.
997.
The law governing the obligation of therapists to report their patients' previous criminal acts was reviewed. Most often, discussions of this subject fall under the general category of "misprison of a felony," that is, the presumed general obligation of all citizens to report felonies that come to their attention. Review of federal law revealed that the courts have consistently interpreted the federal misprision statute as requiring active concealment of a crime, not a mere failure to report, in order to convict for the offense. State law is more diverse. Only one state has a general misprison statute labeled as such, and several states have recently repealed such statutes. The strong trend in states without statutes is to reject misprison as a common law crime, because of its incompatibility with modern notions of justice. Most states, however, have limited reporting statutes, such as for child abuse or gunshot wounds, that impose similar obligations. Therapists' reporting of past crimes may be affected by clinical and ethical concerns, as well as by obligations to protect future victims. In almost all jurisdictions, however, the fear of prosecution for failure to report a past crime should not be a factor in deciding on a course of action.  相似文献   
998.
Discharge of a shotgun with a shotgun casing in its muzzle as a "dust cover" produced a pattern of injuries suggestive of combined intermediate- and distant-range wounds.  相似文献   
999.
Benton  J. Edwin 《Publius》1986,16(2):17-32
Upon coming to office, President Ronald Reagan proposed a numberof programs collectively referred to as the New Federalism.These programs were designed to alleviate some of the problemswhich the president saw as plaguing the intergovernmental systemand to accomplish Reagan's goal of decentralizing authority.One of the most highly publicized and debated— indeed,probably the most controversial—aspect of the President'sNew Federalism package was the "Big Swap" plan. Both versionsof this plan, however, were bad deals for the states and theircommunities, and it would appear that several interrelated economicconcerns played a role in the opposition of many state and localofficials to these proposals. To demonstrate just how bad theseproposals were, the article documents the effect that inflationand recession had had on the fiscal health of state and localgovernments, and the projected impact that these plans wouldhave had on state and local revenue and tax systems.  相似文献   
1000.
Data examined in this study are from the 1976 Mexican Fertility Survey. The authors review previous findings and compare information from this survey with data from the 1969 PECFAL Survey. They then examine the types of consensual union and factors such as women's age, educational status, occupation, premarital fertility, and rural or urban residence. The focus of the study is on the extent to which consensual unions eventually become legal marriages. The authors also investigate the increasing probability of termination of marriage through divorce or separation, especially in urban areas.  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