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Ozonaction newsletter no. 25
(UNEP, 1998)
Ozonaction newsletter no. 23
(UNEP, 1997)
World Plant Conservation Bibliography
(UNEP World Conservation Monitoring Centre (UNEP-WCMC), 1990)
Transfrontier reserves for peace and nature.
(UNEP, 1993)
Global solar UV index: a practical guide
(WHO, 1995)
Ozonaction newsletter no. 30
(UNEP, 1999)










