1. Shepard, H. H., The Pesticide Situation for 1959–1960 (U.S. Dept. of Agriculture).
2. Chisholm, R. D., U.S. Dep. of Agric. Bull. E-643 (March 1945). Balaban, I. E., and Sutcliffe, F. K., Nature, 155, 755 (1945). Fleck, E. E., and Haller, H. L., J. Amer. Chem. Soc., 66, 2095 (1944); 68, 142 (1946); Indust. Eng. Chem., 37, 403 (1945).
3. Baeyer, F., Ber., 6, 223 (1873). Zeidler, O., ibid., 7, 1180 (1879).
4. Sternburg, J., Kearns, C., and Bruce, W., J. Econ. Entomol., 43, 214 (1950). Agosin, M., Michaeli, D., Miskus, R., Nagasawa, S., and Hoskins, W. M., ibid., 54, 340 (1961).
5. Flenner, A. L., J. Amer. Chem. Soc., 68, 2399 (1946).