International Union for Conservation of Nature and Natural Resources & Technical Meeting (8th : 1960 : Warszawa). (1961). The ecological effects of biological and chemical control of undesirable plants and animals = Effets ecologiques du controle biologique et chimique des plantes et animaux indesirables. IUCN.
Cita Chicago Style (17a ed.)International Union for Conservation of Nature and Natural Resources y Technical Meeting (8th : 1960 : Warszawa). The Ecological Effects of Biological and Chemical Control of Undesirable Plants and Animals = Effets Ecologiques Du Controle Biologique Et Chimique Des Plantes Et Animaux Indesirables. s.l.: IUCN, 1961.
Cita MLA (9a ed.)International Union for Conservation of Nature and Natural Resources y Technical Meeting (8th : 1960 : Warszawa). The Ecological Effects of Biological and Chemical Control of Undesirable Plants and Animals = Effets Ecologiques Du Controle Biologique Et Chimique Des Plantes Et Animaux Indesirables. IUCN, 1961.