00412nam a2200133Ia 4500008004100000082004200041100002600083245005100109260004100160300001000201600002500211600002500236650001700261140113s9999    xx            000 0 und d  a"632.951""1974.4.22 / 27""(082.2) L6"  a" Metcalf, Robert L."  aThe future of insecticides needs and prospects  b"New York : John Wiley & sons, 1976"  a524p.  a" McKelvey, John J."  a" McKelvey, John J."  ainsecticides