Books by Gertjan de Graaf
Geographic Information Systems
Geographic Information Systems In Fishereis Management And Planning
Fisheries and aquaculture deve
Fisheries and aquaculture development strategies in the Char Development and Settlement Project, CDSP-II
Floods, fish, and fishermen
Floods, fish, and fishermen
Hatchling migration study
Hatchling migration study
Artificial reproduction and pond rearing of the African catfish clarias gariepinus in Sub-Saharan Africa