
Harris, C. R. and E. P. Lichtenstein 
1961. Factors affecting the volatilization of insecticidal 
residues from soils. Journal of Economic Entomology, vol. 54, 
p. 1038-1045. 
Hartley, G. S. 
1951. Organophosphorus insecticides. The behaviour of schradan 
in the plant. Chemistry and Industry, (rev.), p. 529-532. 
Hartley, G. S. 
1952a. Research developments. The anomaly of systox. World 
Crops (London), vol. 4, p. 397. 
Hartley, G. S. 
1952b. Chemical reactions and decomposition of hanane and 
systox in the living plant. Third Congress of International 
Phytopharmacy, Paris, vol. 2, p. 131-135. (Publ. 1954) 
Hartley, G. S. and D. F. Heath 
195la. First steps in the biochemistry of the systemic insecticides. 
XIIth International Congress of Pure and Applied Chemistry, 
New York, September, p. 483-484. 
Hartley, G. S. and D. F. Heath 
1951b. Decomposition of radioactive octamethylpyrophosphoramide 
in living plants. Nature, vol. 167, p. 816. 
Hassan, A. and S. M. A. D. Zayed 
1965. Metabolism of organophosphorus insecticides. III. Fate of 
the methyl groups of dipterex in vivo. Canadian Journal of 
Biochemistry, vol. 43, p. 1271-1275. 

Hassan, A., S. M. A. D. Zayed, and F. M. Abdel-Hamid 
1965a. Metabolism of organophosphorus insecticides. II. Metabolism 
of 0,0-dimethyl 2,2,2-trichloro-1l-hydroxyethylphosphonate (dipterex) 
in mammalian nervous tissue and kinetics involved in its reaction 
with acetylcholinesterase, Canadian Journal of Biochemistry, vol. 43, 
p. 1263-1269. 
Hassan, A., S. M. A. D. Zayed, and F. M. Abdel-Hamid 
1965b. Metabolism of organophosphorus insecticides. V. Mechanism 
of detoxification of dipterex in Prodenia litura F. Biochemical 
Pharmacology, vol. 14, p. 1577-1585. 
Hassan, A., S. M. A. D. Zayed, and §. Hashish 
1965c. Metabolism of organophosphorus insecticides. VI. Mechanism 
of detoxification in the rat. Biochemical Pharmacology, vol. 14, 
p. 1692-1694, 
214 
