分面浏览：发表日期 |
| 当前检索式 | ((ALL：River basin)) |
| 限定条件 | 无 |
| 2024 13 | 2023 29 | 2022 74 |
| 2021 274 | 2020 369 | 2019 577 |
| 2018 649 | 2017 540 | 2016 638 |
| 2015 657 | 2014 522 | 2013 477 |
| 2012 421 | 2011 291 | 2010 489 |
| 2009 321 | 2008 269 | 2007 239 |
| 2006 165 | 2005 171 | 2004 102 |
| 2003 87 | 2002 69 | 2001 49 |
| 2000 22 | 1999 21 | 1998 19 |
| 1997 10 | 1996 10 | 1995 2 |
| 1994 6 | 1993 7 | 1992 12 |
| 1991 4 | 1990 7 | 1989 13 |
| 1988 2 | 1987 3 | 1986 3 |
| 1985 1 | 1984 1 | 1983 3 |
| 1982 1 | 1981 5 | 1978 2 |
