Schmidt, C. H. and P. A. Dahm 
1956. The synthesis of cl4_1abeled piperonyl butoxide and its 
fate in the Madeira roach. Journal of Economic Entomology, 
vol. 49, p. 729-735, 
Schrader, G. 
1963. Konstitution und Wirkung organischer phosphorverbindungen. 
Zeitschrift fur Naturforschung, vol. 186, p. 965-975. 
Self, L. S., F. E. Guthrie, and E. Hodgson 
1964. Metabolism of nicotine by tobacco-feeding insects. 
Nature, vol. 204, p. 300-301. 
Seume, F. W. and R. D. O'Brien 
1960. Metabolism of malathion by rat tissue preparations and its 
modification by EPN. Journal of Agricultural and Food Chemistry, 
vol. 8, p. 36-41. 
Sheets, T. J. 
1958. Factors influencing the herbicidal activity of EPTC. 
Research Progress Report, Western Weed Control Conference, p. 88. 
Sheets, T. J. 
1963. Photochemical alteration and inactivation of amiben. 
Weeds, vol. 11, p. 186-190. 
Sheets, T. J. 
1961. Uptake and distribution of simazine by oat and cotton 
seedlings. Weeds, vol. 9, p. 1-13. 
Sheets, T. J., Alden S. Crafts, and Harold R. Drever 
1962. Influence of soil properties on the phytotoxicities of the 
s-triazine herbicides. Journal of Agricultural and Food Chemistry, 
vol. 10, p. 458-462. 
Sheets, T. J. and L. L. Danielson 
1960. Nature and fate of chemicals applied to soils, plants, 
and animals. United States Department of Agriculture Symposiun, 
April 27-29, Beltsville, Maryland, p. 170-181. 
Shimabukuro, R. H. and A. J. Linck 
1965. The metabolism of 3-amino-1,2,4-triazole in the fruit 
of bean, Phaseolus vulgaris. Physiologia Plantarum, vol. 18, 
p. 516-532. 
Shipp, O. E., D. A. Lindquist, and J. R. Brazzel 
1963. Characteristics of residues of methyl parathion applied to 
field cotton. Journal of Economic Entomology, vol. 56, p. 793-798. 
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