分面浏览：发表日期 |
| 当前检索式 | ((ALL：NET)) |
| 限定条件 | ((专题：北京大学)) |
| 2017 277 | 2016 420 | 2015 361 |
| 2014 667 | 2013 483 | 2012 5477 |
| 2011 523 | 2010 529 | 2009 409 |
| 2008 556 | 2007 444 | 2006 565 |
| 2005 618 | 2004 529 | 2003 449 |
| 2002 429 | 2001 459 | 2000 328 |
| 1999 365 | 1998 244 | 1997 230 |
| 1996 161 | 1995 195 | 1994 222 |
| 1993 114 | 1992 125 | 1991 108 |
| 1990 145 | 1989 180 | 1988 94 |
| 1987 136 | 1986 229 | 1985 89 |
| 1984 193 | 1983 204 | 1982 172 |
| 1981 124 | 1980 77 | 1979 30 |
| 1978 10 | 1977 8 | 1976 2 |
| 1975 2 | 1974 10 | 1973 10 |
| 1972 3 | 1971 1 | 1965 2 |
| 1964 5 | 1963 1 | 1961 1 |
| 1960 6 | 1959 12 | 1958 19 |
| 1957 18 | 1956 5 |
