International Union of Biological Sciences. International Organization for Biological Control of Noxious Animals and Plants
Titolo
Proceedings of the 4th OILB symposium on integrated control in orchards = = Comptes rendus du 4e symposium OILB sur la lutte integree en vergers = = Abhandlungen des 4. Symposiums ober Integrierte Bekampfung im Obstbau : Avignon, 9-12. IX. 1969