1. BATCHELOR, G. S., and K. C. WALKER: A. M. A. Arch. Ind. Hyg. Occup. Med.10, 522 (1954).
2. DRAPER, W. M., R. D. GIBSON, and J. C. STREET: Bull. Environ. Contam. Toxicol., submitted.
3. FEDERAL REGISTER 37(52), 5496 (1972).
4. U.S. DEPARTMENT OF HEW: Registry of Toxic Effects of Chemical Substances. 1976 ed. U.S. Government Printing Office (1976).
5. WOLFE, H. R.: In: Air Pollution from Pesticides and Agricultural Processes. Edited by R. E. Lee. Cleveland, OH: CRC Press, Inc. (1976).