Balk, Ir. F., Future Hazards from Pesticide Use : with special reference to West Africa and Southeast Asia / by Ir.F. Balk and J.H. Koeman - 100 pages : Illustrations, maps ; 28 cm - Commission on Ecology paper ; no. 6 . Includes bibliographical references Subjects--Topical Terms: Pesticides --Environmental aspects --Africa, WestPesticides --Environmental aspects --Asia, SoutheasternPesticides --Environmental aspects LC Class. No.: QH545.P4 / B35