分面浏览：Issued Date |
| 当前检索式 | ((ALL：impurity)) |
| 限定条件 | 无 |
共52条，第1-52条
| 2023 16 | 2022 67 | 2021 84 |
| 2020 96 | 2019 76 | 2018 129 |
| 2017 97 | 2016 89 | 2015 52 |
| 2014 75 | 2013 52 | 2012 71 |
| 2011 84 | 2010 134 | 2009 124 |
| 2008 102 | 2007 78 | 2006 84 |
| 2005 86 | 2004 75 | 2003 45 |
| 2002 52 | 2001 63 | 2000 45 |
| 1999 51 | 1998 52 | 1997 40 |
| 1996 35 | 1995 36 | 1994 27 |
| 1993 35 | 1992 44 | 1991 54 |
| 1990 53 | 1989 72 | 1988 61 |
| 1987 72 | 1986 51 | 1985 58 |
| 1984 51 | 1983 34 | 1982 20 |
| 1981 7 | 1980 4 | 1979 6 |
| 1976 1 | 1974 2 | 1972 1 |
| 1967 3 | 1966 1 | 1965 2 |
| 1964 1 |