U -L-iitfUU 



Riordan, J.F. and B.L. Vallee. 1976. Structure and function 

 of zinc metalloenzymes . Trace Elements in Human Health and 

 Disease, A.S. Prusad Ed. Academic Press, New York. V. 1, 

 pp. 227-256. 



Rittenhouse, L.R. and F.A. Sneva. 1973. The influence of 

 selected cl imatological parameters on water intake by 

 cattle. In: Water-Animal Relations, Proceedings. H.F. 

 Mayland Ed. Water-Animal Relations Committee. Kimberly, 

 Idaho. pp. 55-62. 



Riviere, J.E., T.R. Boosinger and R.J. Everson. 1981. 



Inorganic arsenic toxicosis in cattle. Modern Veteri- 

 nary Practice. V. 62(3), pp. 209-211. 



Roels, H.A., R.R. Lauwerys, J. P. Buchet, A. Bernard, O.C. 



Chettle, T.C. Harvey, and I.K. Al-Haddad. 1981. In vivo 

 measurement of liver and kidney cadmium in workers exposed 

 to this metal: Its significance with respect to cadmium in 

 blood and urine. Environmental Research V. 26, pp. 

 217-240. 



Ronneau, C. , M. Detry, J. P. Hallet and P. Lardinois. 1983. 



Concentration of some elements in the hair of cattle as an 

 indicator of contamination by air pollutant deposition on 

 grass. Agriculture, Ecosystems and Environment. V. 10, 

 pp. 285-298. 



Root, R.A., R.J. Miller and D.E. Koeppe. 1975. Uptake of 



cadmium — its toxicity and effect on the iron-to-zinc ratio 

 in hydroponically grown corn. Journal of Environmental 

 Quality. V. 4, pp. 473-476. 



Rosiles, M.R. 1977. Arsenic levels detected in cattle at 



intervals following accidental intoxication. Veterinaria. 

 V. 8, pp. 119-122. 



Ruhr, L.P. 1984. Blood lead, delta-aminolevul inic acid 

 dehydratase and free erythrocyte porphyrins in normal 

 cattle. Veterinary and Human Toxicology. V. 26(2), pp. 

 105-107. 



Rundle, H.L., M. Calcroft and C. Holt. 1984. An Assessment 

 of accumulation of Cd , Cr , Cu , Ni and Zn in the tissues of 

 British friesian steers fed on the products 01 land which 

 has received heavy applications of sewage sludge. Journal 

 of Agricultural Science. V. 106, pp. 1-6. 



Russell, H.A. and A. Schoberl. 1970. Ein Bleiablagerung in 

 Rinderhaaren. Dtsch. Tieraerztl. Wochschr . V. 77, pp. 



517-518. 



Sahli, B.P. 1982. Arsenic concentrations in cattle liver, 

 kidney and milk. Veterinary and Human Toxicology. V. 

 24(3), pp. 173-174. 



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