分面浏览：发表日期 |
| 当前检索式 | ((ALL：Yb)) |
| 限定条件 | ((专题：北京大学)) |
| 2017 35 | 2016 46 | 2015 45 |
| 2014 51 | 2013 44 | 2012 46 |
| 2011 33 | 2010 24 | 2009 40 |
| 2008 17 | 2007 18 | 2006 24 |
| 2005 40 | 2004 41 | 2003 21 |
| 2002 16 | 2001 17 | 2000 8 |
| 1999 5 | 1998 14 | 1997 18 |
| 1996 3 | 1995 8 | 1994 5 |
| 1993 2 | 1992 5 | 1991 3 |
| 1990 1 | 1989 1 | 1988 2 |
| 1987 4 | 1986 2 | 1984 3 |
| 1983 1 | 1982 4 | 1981 2 |
| 1975 1 | 1974 1 | 1973 1 |
