00314nam a2200109Ia 4500008004100000082001500041100002700056245004200083260002600125490003000151650002300181140113s9999    xx            000 0 und d  a632.937 M1  a" Samways, Michael J."  aBiological control of pests and weeds  b"Edward Arnold, 1981"  aStudies in biology no.132  aBiological control