分面浏览：发表日期 |
| 当前检索式 | ((ALL：参数变化)) |
| 限定条件 | ((专题：北京大学)) |
| 2017 18 | 2016 28 | 2015 25 |
| 2014 32 | 2013 20 | 2012 44 |
| 2011 25 | 2010 20 | 2009 22 |
| 2008 24 | 2007 23 | 2006 17 |
| 2005 23 | 2004 20 | 2003 25 |
| 2002 18 | 2001 19 | 2000 24 |
| 1999 6 | 1998 12 | 1997 9 |
| 1996 9 | 1995 6 | 1994 3 |
| 1993 5 | 1992 5 | 1991 5 |
| 1990 2 | 1989 8 | 1988 3 |
| 1987 5 | 1986 10 | 1985 5 |
| 1984 7 | 1983 4 | 1982 2 |
| 1981 4 | 1980 1 | 1979 1 |
| 1976 1 | 1965 1 |
