分面浏览：发表日期 |
| 当前检索式 | ((ALL：DIFFERENTIATION)) |
| 限定条件 | ((专题：北京大学)) |
| 2017 65 | 2016 71 | 2015 65 |
| 2014 54 | 2013 47 | 2012 47 |
| 2011 32 | 2010 28 | 2009 32 |
| 2008 25 | 2007 32 | 2006 20 |
| 2005 22 | 2004 22 | 2003 15 |
| 2002 23 | 2001 10 | 2000 15 |
| 1999 12 | 1998 6 | 1997 1 |
| 1996 2 | 1995 5 | 1994 3 |
| 1993 3 | 1992 2 | 1991 1 |
| 1990 1 | 1988 1 | 1986 1 |
| 1982 1 |
