00919nam0-22003371i-450-99000206327040332120021010000206327FED01000206327(Aleph)000206327FED0100020632720021010d--------km-y0itay50------baitaDDT and newer persistent insecticidesT.F. West and G.A. Campbell.2.LondonChapman & Hall1950.632 p.22 cmAntiparassitariInsetticidiDDT632West,Trustham Frederick16068Campbell,George AlexanderITUNINARICAUNIMARCBK99000206327040332161 IX E.5/181154 (10/1/56)DAGENDAGENDDT and newer persistent insecticides393897UNINAING01