Szegi József (szerk.): Proceedings of the 9th International Symposium on Soil Biology and Conservation of the Biosphere 2. - Proceedings of the International Symposium on Soil Biology and Conservation of the Biosphere 9/2. (Budapest, 1987)
PROCEEDINGS OF THE 9th INTERNATIONAL SYMPOSIUM onSOIL biology andCONSERVATION optheBIOSPHERE VOL. 2 l EDITED BY J. SZEGI AKADÉMIAI KIADÓ, BUDAPEST