Studies on contact insecticides /
Richardson, Charles H
Studies on contact insecticides / by Charles H. Richardson and C. R. Smith - Washington : Department of Agriculture - 16 p. - EUA. Dept. of Agri. Bull.; 1160 .
203775
Insecticidas -- Análisis Insecticidas de contacto
Studies on contact insecticides / by Charles H. Richardson and C. R. Smith - Washington : Department of Agriculture - 16 p. - EUA. Dept. of Agri. Bull.; 1160 .
203775
Insecticidas -- Análisis Insecticidas de contacto
