分面浏览：发表日期 |
| 当前检索式 | ((ALL：Water conservation)) |
| 限定条件 | 无 |
| 2024 11 | 2023 27 | 2022 49 |
| 2021 169 | 2020 216 | 2019 284 |
| 2018 231 | 2017 243 | 2016 235 |
| 2015 179 | 2014 175 | 2013 154 |
| 2012 179 | 2011 120 | 2010 212 |
| 2009 123 | 2008 119 | 2007 76 |
| 2006 89 | 2005 64 | 2004 60 |
| 2003 52 | 2002 32 | 2001 42 |
| 2000 41 | 1999 31 | 1998 21 |
| 1997 17 | 1996 16 | 1995 10 |
| 1994 17 | 1993 6 | 1992 3 |
| 1991 2 | 1990 3 | 1989 3 |
| 1987 1 | 1984 1 | 1981 1 |
