Sampson, J., R. Graham and H.R. Hester. 1942. Studies on 



feeding zinc to pigs. The Cornell Veterinarian. V. 32(3), 

 pp. 225-236. 



Savchuck, W.B., et al . 1960. Effect of arsenic on growth of 

 mammalian cells _in vitro . Proceedings Society Experimental 

 Biologists in Medicine. pp. 543-547 



Schilling, R. 1985. Personal Communication. Special Studies 

 Branch. Center for Disease Control. Atlanta, GA. 



Schmitt, N., G. Brown, E.L. Devlin, A. A. Larsen, E.D. 



McCausland and J.M. Saville. 1971. Lead poisoning in 

 horses. Archives Environmental Health. V. 23, pp. 

 185-195. 



Schroeder, H.A. and J.J. Balassa. 1966. Abnormal trace 

 metals in man: Arsenic. Journal Chronic Diseases. 

 V. 19, pp. 85-106. 



Schroeder, H.A. and W.H. Vinton. 1962. Hypertension 



induced in rats by small doses of cadmium. American 

 Journal of Physiology. V. 202, pp. 515.-517. 



Selby, L.A., A. A. Case, G.D. Osweiler and H.M. Hayes. 1977. 

 Epidemiology and toxicology of arsenic poisoning in 

 domestic animals. Environmental Health Perspectives. 

 V. 19, pp. 183-189. 



Selby, L.A., A. A. Case, C.R. Dorn and D.J. Wagstaff. 1974. 



Public health hazards associated with arsenic poisoning in 

 cattle. Journal American Veterinary Medical Association. 

 V. 165 (1) , pp. 1010-1014. 



Severson, R.C., L.P. Gough, and J.M. McNeal. 1977. Availa- 

 bility of elements in soils to native plants, Northern Great 

 Planin. In: Geochemical Survey of the Western Energy 

 Region. U.S.G.S. Open-file Report 77-872. Denver, CO. 



Shacklette, H.T. and J.G. Boerngen. 1984. Element 



concentrations in soils and other surficial materials of 

 the conterminous United States. U.S. Geological Survey Pro- 

 fesional Paper 1270. 



Shar iatpanahi , M. and A.C. Anderson. 1984a. Uptake, dis- 

 tribution and elimination of monosodium methanearsonate 

 following long term oral administration of the herbi- 

 cide to sheep and goats. Journal of Environmental 

 Science and Health. V. 19,(6), pp. 555-564. 



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