00890nam0-22003011i-450-99000206197040332120021010000206197FED01000206197(Aleph)000206197FED0100020619720021010d--------km-y0itay50------baitaSpraying, dusing and fumigationg of plantsprinciples and applicationsWalter S. Hough and A. Freeman Mason.New YorkMacmillan Co.1951.726 p.22 cmAntiparassitariTrattamenti632.94Hough,Walter S.88023Mason,A. FreemanITUNINARICAUNIMARCBK99000206197040332161 IX E.1/172459DAGENDAGENSpraying, dusing and fumigationg of plants393017UNINAING01