分面浏览：发表日期 |
| 当前检索式 | ((ALL：Powell)) |
| 限定条件 | 无 |
| 2022 1 | 2021 2 | 2020 4 |
| 2019 95 | 2018 26 | 2017 32 |
| 2016 30 | 2015 28 | 2014 60 |
| 2013 59 | 2012 53 | 2011 36 |
| 2010 66 | 2009 8 | 2008 14 |
| 2007 15 | 2006 12 | 2005 7 |
| 2004 10 | 2003 10 | 2002 6 |
| 2001 4 | 2000 5 | 1999 5 |
| 1998 4 | 1997 1 | 1995 1 |
| 1993 2 | 1992 2 | 1991 1 |
| 1990 2 | 1989 1 | 1987 2 |
| 1985 2 | 1984 1 | 1980 1 |
| 1975 1 | 1972 1 |
