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Full-text available from the year 2000 to current. Abstracts only from 1940 to 1999. GeoRef records only prior to that.
- 2023 Volume 160, Numbers 1 - 5
- 2022 Volume 159, Numbers 1 - 11-12
- 2021 Volume 158, Numbers 1 - 12
- 2020 Volume 157, Numbers 1 - 12
- 2019 Volume 156, Numbers 1 - 12
- 2018 Volume 155, Numbers 1 - 8 (13)
- 2017 Volume 154, Numbers 1 - 6
- 2016 Volume 153, Numbers 1 - 5-6
- 2015 Volume 152, Numbers 1 - 6
- 2014 Volume 151, Numbers 1 - 6
- 2013 Volume 150, Numbers 1 - 6
- 2012 Volume 149, Numbers 1 - 6
- 2011 Volume 148, Numbers 1 - 5-6
- 2010 Volume 147, Numbers 1 - 6
- 2009 Volume 146, Numbers 1 - 6
- 2008 Volume 145, Numbers 1 - 6
- 2007 Volume 144, Numbers 1 - 6
- 2006 Volume 143, Numbers 1 - 6
- 2005 Volume 142, Numbers 1 - 6
- 2004 Volume 141, Numbers 1 - 6
- 2003 Volume 140, Numbers 1 - 6
- 2002 Volume 139, Numbers 1 - 6
- 2001 Volume 138, Numbers 1 - 6
- 2000 Volume 137, Numbers 1 - 6
- 1999 Volume 136, Numbers 1 - 5
- 1998 Volume 135, Numbers 1 - 6
- 1997 Volume 134, Numbers 1 - 5
- 1996 Volume 133, Numbers 2 - 6
- 1995 Volume 132, Numbers 1 - 5
- 1994 Volume 131, Numbers 1 - 3
- 1993 Volume 130, Numbers 1 - 5
- 1992 Volume 129, Numbers 1 - 6
- 1991 Volume 128, Numbers 1 - 6
- 1990 Volume 127, Numbers 1 - 6
- 1990 Volume 128, Number 3
- 1989 Volume 126, Numbers 1 - 6
- 1988 Volume 125, Numbers 1 - 6
- 1987 Volume 124, Numbers 1 - 6
- 1986 Volume 123, Numbers 1 - 6
- 1985 Volume 122, Numbers 1 - 6
- 1984 Volume 121, Numbers 1 - 6
- 1983 Volume 120, Numbers 1 - 6
- 1982 Volume 119, Numbers 1 - 6
- 1981 Volume 118, Numbers 1 - 6
- 1980 Volume 117, Numbers 1 - 6
- 1979 Volume 116, Numbers 1 - 5
- 1978 Volume 115, Numbers 1 - 6
- 1977 Volume 114, Numbers 1 - 5
- 1976 Volume 113, Numbers 1 - 6
- 1975 Volume 112, Numbers 1 - 6
- 1974 Volume 111, Numbers 1 - 6
- 1973 Volume 109, Number 6
- 1973 Volume 110, Numbers 1 - 6
- 1972 Volume 109, Numbers 1 - 5
- 1971 Volume 108, Numbers 1 - 6
- 1970 Volume 107, Numbers 1 - 6
- 1969 Volume 106, Numbers 1 - 6
- 1968 Volume 105, Numbers 1 - 6
- 1967 Volume 104, Numbers 1 - 6
- 1966 Volume 103, Numbers 1 - 6
- 1965 Volume 102, Numbers 1 - 6
- 1964 Volume 100, Number 5
- 1964 Volume 101, Numbers 1 - 6
- 1963 Volume 100, Numbers 1 - 6
- 1962 Volume 99, Numbers 1 - 6
- 1961 Volume 98, Numbers 1 - 6
- 1960 Volume 97, Numbers 1 - 6
- 1959 Volume 96, Numbers 1 - 6
- 1958 Volume 95, Numbers 1 - 6
- 1957 Volume 94, Numbers 1 - 6
- 1956 Volume 93, Numbers 1 - 6
- 1955 Volume 92, Numbers 1 - 6
- 1954 Volume 91, Numbers 1 - 6
- 1953 Volume 90, Numbers 1 - 6
- 1952 Volume 88, Number 5
- 1952 Volume 89, Numbers 1 - 6
- 1951 Volume 88, Numbers 1 - 6
- 1950 Volume 87, Numbers 1 - 6
- 1949 Volume 86, Numbers 1 - 6
- 1948 Volume 80, Number 5
- 1948 Volume 85, Numbers 1 - 6
- 1947 Volume 84, Numbers 1 - 6
- 1946 Volume 83, Numbers 1 - 6
- 1945 Volume 82, Numbers 1 - 6
- 1944 Volume 81, Numbers 1 - 6
- 1943 Volume 80, Numbers 1 - 6
- 1942 Volume 79, Numbers 1 - 6
- 1941 Volume 78, Numbers 1 - 6
- 1940 Volume 77, Numbers 1 - 6
