DDT and newer persistent insecticides
West, T.F., Campbell, G.A.
DDT and newer persistent insecticides by T.F. West and G.A. Campbell - 2nd edn. rev. - London 1950 - 632 p. & 11 plates
Insecticides
632.951 / W 521 D
DDT and newer persistent insecticides by T.F. West and G.A. Campbell - 2nd edn. rev. - London 1950 - 632 p. & 11 plates
Insecticides
632.951 / W 521 D