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Full-text available from the year 1997 to current. Citations only from 1994 to 1996. GeoRef records only prior to that.
- 2024 Volume 88, Numbers 1 - 6
- 2023 Volume 87, Numbers 1 - 6
- 2022 Volume 86, Numbers 1 - 6
- 2021 Volume 85, Numbers 1 - 6
- 2020 Volume 84, Numbers 1 - 6
- 2019 Volume 83, Numbers 1 - 6
- 2018 Volume 82, Numbers 1 - S1
- 2017 Volume 81, Numbers 1 - 6
- 2016 Volume 80, Numbers 1 - 7
- 2015 Volume 79, Numbers 1 - 7
- 2014 Volume 78, Numbers 1 - 7
- 2013 Volume 77, Numbers 1 - 8
- 2012 Volume 76, Numbers 1 - 8
- 2011 Volume 75, Numbers 1 - 6
- 2010 Volume 74, Numbers 1 - 6
- 2009 Volume 73, Numbers 1 - 6
- 2008 Volume 72, Numbers 1 - 6
- 2007 Volume 71, Numbers 1 - 6
- 2006 Volume 70, Numbers 1 - 6
- 2005 Volume 69, Numbers 1 - 6
- 2004 Volume 68, Numbers 1 - 6
- 2003 Volume 67, Numbers 1 - 6
- 2002 Volume 66, Numbers 1 - 6
- 2001 Volume 65, Numbers 1 - 6
- 2000 Volume 64, Numbers 1 - 6
- 1999 Volume 63, Numbers 1 - 6
- 1998 Volume 62, Numbers 1 - 6
- 1997 Volume 61, Numbers 1 - 6
- 1996 Volume 60, Numbers 1 - 6
- 1995 Volume 59, Numbers 1 - 4
- 1994 Volume 58, Numbers 1 - 4
- 1994 Volume 58A, Numbers A-K - L-Z
