| May, 1998 | A joint publication by the World Resources Institute, the United Nations Environment Programme, the United Nations ... |
| April, 1998 | Marta Miranda with Alberto Blanco-Uribe Q., Lionel Hernández, José Ochoa G., and Edgard Yerena
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| January, 1998 | Richard Matthew and George Shambaugh, Georgetown University
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| December, 1997 | World Resources Institute |
| October, 1997 | Roger Dower, Daryl Ditz, Paul Faeth, Nels Johnson, Keith Kozloff, and James J. MacKenzie. Introduction by Walter ... |
| August, 1997 | Charles Victor Barber and Vaughan R. Pratt
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| March, 1997 | Dirk Bryant, Daniel Nielsen and Laura Tangley
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| December, 1996 | Kenton R. Miller
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| September, 1996 | Nigel Sizer |
| September, 1996 | Edited by Lori Ann Thrupp
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