Verhandlungen des IV. internationalen pflanzenschutz-kongresses Hamburg, 8-15. sempember 1957 = Proceedings of the IVth international congress pf crop protection Hamburg, 8th-15th...

Published 1960

Verhandlungen des IV. internationalen pflanzenschutz-kongresses Hamburg sempember 1957 = Proceedings of the IVth international congress pf crop protection Hamburg september 1957 =...

Published 1959

Die wichtigsten unkräuter /

by Braun, Hans
Published 1966