00463nam a2200157Ia 4500 0000016680 20251012174749.0 831123s1979 sz a i00 k engrc 9241541407 RA1270 Specifications for pesticides used in public health insecticide-molluscicides-repellents methods 5th ed Geneva World Health Organisation 1979 327p. 24cm Pesticides. 10304 10304