International conference on tropical aquatic ecosystems, health, management and conservation, Nainital (India), 25-30 October 1999, second circular and call for papers / sponsored by Aquatic Ecosystem Health and Management Society (AHEMS)
International conference on tropical aquatic ecosystems, health, management and conservation, Nainital (India), 25-30 October 1999, second circular and call for papers / sponsored by Aquatic Ecosystem Health and Management Society (AHEMS)