Gy aan yo (. iii, ; Gs “ L REFERENCES CONT'D. -2LO. "Accumulation and Movement of Fission Products in Soils and Plants." Quarterly Reports of Soil and Water Conservation Research Division U. S. Department of Agriculture. Dr. R. F. Reitemeier, et al. January - March 1958; April - June 1958; July - September 1959. These studies show the existence of chemical fixation up to as much as 30% in some soils and many fine points about run-off and degree of absorption in mulch and plant cover. ll. 12. 13. 14. "Strontium-90 in Man II." Schulert, A. R. Kulp, J. L., Eckelmann, Walter R., and Science 127, 266-74 (1958). "Entry of Radioactive Fallout into the Biosphere and Man." Langham, Wright, and Anderson, E. C. "World-Wide Distribution of Strontium-90 and Its Uptake in Man." Kulp, J. L. "Barium-140 Radioactivity in Foods.” Anderson, EB. C., Schuch, R. L., Fisher, W. R., Van Dilla, M. A. Science 127, 3293, p. 283, Feb. 7, 1958. 15. 16. —_ "Note on the Entry of Strontium-90 Into Plants Under Normal Conditions." Russell, R. Scott (Private Communication) "Discrimination Between Strontium and Calcium in Plants and Soils." Martin, R. P., Newbould, P., Russell, R. Scott. Paper presented at UNESCO Conf. on Radioisotopes in Scientific Research. (1957). This paper speaks convineingly of the importance of folial and stem pick up as contrasted with root assimilation. It shows that the former is much more important for plants growing at the line fallout occurs. 17. 18. "Levels of Strontium-90 in Canada Up to December 1956." W. E., Carruthers, E. W. AECL-659, February 1957. Grummitt, "Comparative Metabolism of Strontium and Calcium in Man.” Schulert, S. R., Peets, E. A., Laszlo, D., Spencer, H., Charles, M., and Samachson, J. International Journal of Applied Radiation and Isotoges (to be published). Trace strontium and calcium were administered to terminal cancer patients intravenously and the distribution in bone and major organs determined. The ratio cf strontium in bone to soft tissue increases until at tour mcaths 99.5% of the retained strontium is in bone. The retention of caicium is about 60% and of strontium 25%. 19. Marine Geochemical Studies with Fallout Radioisotopes. Bowen, U. T., and Sugeliara, T. T., 1958. Contribution No. 970 from Woods Hole Oceanographic Institute. ee te

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