0141776 



Anke, M. , A. Henning, H.J. Schneider, H. Ludke, W. Von Gargen 

 and H. Schlegel. 1970. The interrelations between 

 cadmium, zinc, copper and iron in metabolism of hens, 

 ruminants and man. In: C.F. Mills, ed . Trace Element 

 Metabolism in Animals. E.-S. Livingstone, Edinburgh, pp. 

 317-320. 



Aronson, A.L. 1972. Lead poisoning in cattle and horses 



following long-term exposure to lead. American Journal of 

 Veterinary Research. V. 33(3), pp. 627-629. 



Ashton, W.M., M. Williams and J. Ingleton. 1977. Studies on 

 ewe's milk: The content of some trace elements. Journal 

 of Agricultural Science. V. 88. pp. 529- 



Baker, D.E., M.C. Amacher, and R.M. Leach. 1979. Sewage 

 sludge as a source of cadmium in soil-plant-animal 

 systems. Environmental Health Perspectives. V. 28, pp. 

 45-49. 



Barltrop, D. 1969. Transfer of lead to the human foetus. 

 1969. In: Barltrop, D. and W.L. Burland, Eds. 

 Mineral metabolism in Paedintrics. Philadelphia: 

 F.A. Davis Co. pp. 135-151. 



Baumhardt, G.R. and L.F. Welch. 1972. Lead uptake and corn 

 growth with soil applied lead. Journal of Environmental 

 Quality. V. 1(1), pp. 92-95. 



Baxter, J.C., D. Johnson, W.D. Burge, E. Kienholz, W.N. 



Cramer. 1983. Effects on cattle from exposure to sewage 

 sludge. Environmental Protection Agency, Project Summary 

 EPA-600/52-83-012. 6 pp. 



Baxter, J.C., B. Barry, D.E. Johnson, E.W. Kienholz. 1982. 



Heavy metal retention in cattle tissues from ingestion of 

 sewage sludge. Journal of Environmental Quality. V. 11 

 (4) , pp. 616-620. 



Bazzaz, F.A. , R.U. Carlson and G.L. Rolfe. 1974. The 



effect of heavy metals on plants. I. Inhibition of gas 

 exchange in sunflower by Pb , Cd , Ni, and Ti. Environment- 

 al Pollution (Series A). V. 7, pp. 241-246. 



Beckett, P.H.T. and R.D. Davis. 1977. Upper critical 



levels of toxic elements in plants. New Phytologist. 

 V. 79, pp. 95-106. 



Beckett, P.H.T., and R.D. Davis, 1978. The additivity of the 

 toxic effects of Cu, Ni, and Zn in young barley. New 

 Phytologist. V. 81, pp. 155-173. 



1 75 



