D D T and newer persistant insecticides
WEST, T.F
D D T and newer persistant insecticides - 2nd rev ed. - London 1950 - 632p
INSECTICIDES
INSECTICIDES
632.951 W34D
D D T and newer persistant insecticides - 2nd rev ed. - London 1950 - 632p
INSECTICIDES
INSECTICIDES
632.951 W34D