分面浏览：发表日期 |
| 当前检索式 | ((ALL：Human activities)) |
| 限定条件 | 无 |
| 2024 18 | 2023 37 | 2022 101 |
| 2021 259 | 2020 336 | 2019 411 |
| 2018 438 | 2017 432 | 2016 534 |
| 2015 449 | 2014 371 | 2013 340 |
| 2012 348 | 2011 244 | 2010 338 |
| 2009 275 | 2008 202 | 2007 180 |
| 2006 172 | 2005 146 | 2004 110 |
| 2003 79 | 2002 58 | 2001 43 |
| 2000 21 | 1999 20 | 1998 16 |
| 1997 9 | 1996 9 | 1995 10 |
| 1994 7 | 1993 5 | 1992 6 |
| 1991 3 | 1990 4 | 1988 2 |
| 1987 2 | 1986 4 | 1984 1 |
| 1983 1 | 1981 1 | 1980 1 |
