O'Brien, R. D. 
1957a. The mechanism of schradan activation by liver microsomes. 
Canadian Journal of Biochemistry and Physiology, vol. 35, 
p. 45-54. 
O'Brien, R. D. 
1957b. Properties and metabolism in the cockroach and mouse of 
malathion and maloxon. Journal of Economic Entomology, vol. 50, 
p. 159-164. 
O'Brien, R. D., W. C. Dauterman, and R. P. Niedermeier 
1961b. The metabolism of orally administered malathion by a 
lactating cow. Journal of Agricultural and Food Chemistry, 
vol. 9, p. 40-42. 
O'Brien, R. D., E. C. Kimmel, and P. R. Sferra 
1965. Toxicity and metabolism of famphur in insects and mice. 
Journal of Agricultural and Food Chemistry, vol. 13, p. 366-369. 
O'Brien, R. D. and E. H. Smith 
196la. The uptake and metabolism of parathion by insect eggs. 
Journal of Economic Entomology, vol. 54, p. 187-191. 
O'Brien, R. D. and E. Spencer 
1953. Metabolism of octamethylphyrophosphoramide by insects. 
Journal of Agricultural and Food Chemistry, vol. 1, p. 946-950. 
O'Brien, R. D. and E. Spencer 
1955. Further studies on the insect metabolism of octamethyl- 
pyrophosphoramide. Journal of Agricultural and Food Chemistry, 
vol. 3, p. 56-61. 
O'Brien, R. D., G. D. Thorn, and R. W. Fisher 
1958. New organophosphate insecticides developed on rational 
principles. Journal of Economic Entomology, vol. 51, p. 714-718. 
O'Brien, R. D. and L. S. Wolfe 
1959. The metabolism of co-ral (Bayer 21/199) by tissues of the 
house fly, cattle grub, ox. rat, and mouse. Journal of Economic 
Entomology, vol. 52, p. 692-695. 
Ofner, Ruth R. and Herbert O. Calvery 
1945. Determination of DDT [2,2-bis(p-chlorophenyl)1,1,1-tri- 
chloroethane] and its metabolite in biological materials by use of 
the Schecter-Haller method. Journal of Economic Entomology, vol. 38, 
p. 363-370. 
241 
