分面浏览：发表日期 |
| 当前检索式 | ((ALL：Nitrogen concentrations)) |
| 限定条件 | 无 |
| 2024 8 | 2023 29 | 2022 57 |
| 2021 121 | 2020 162 | 2019 207 |
| 2018 265 | 2017 250 | 2016 316 |
| 2015 219 | 2014 158 | 2013 128 |
| 2012 143 | 2011 123 | 2010 164 |
| 2009 105 | 2008 72 | 2007 61 |
| 2006 29 | 2005 37 | 2004 26 |
| 2003 15 | 2002 14 | 2001 10 |
| 2000 10 | 1999 4 | 1998 6 |
| 1997 4 | 1996 4 | 1995 1 |
| 1994 2 | 1993 3 | 1992 1 |
| 1987 1 | 1905 1 |
