1. BARNOLA, F.V., G. CAMEGO and R. VILLEGAS: Intern. J. Neurosciences1, 309 (1971).
2. BTMAN, J., H.C. CECIL and G.F. FRIES: Science174, 64 (1971).
3. BROOKS, G.T.: ‘Chlorinated Insecticides II. Biological and Environmental Aspects.’ pp. 64 and 115, CRC Press, Cleveland. 1974.
4. BUSVINE, J.R.: 'A critical review of the techniques for testing insecticides,' 2nd ed., p. 271, Commonwealth Agricultural Bureaux, London. 1971.
5. COCHRAN, D.G.: J. Econ. Entomol.48 131 (1955).