UNCLASSIFIED 40782] Reprints of Papers Presented at the First National Symposium on Radioecology by the Staff of the Laboratory of Radiation Biology University of Washington Radionuclides in Plankton and Tuna from the Central Pacific. Radioactivity of Marine Organisms from Guam, Palau and the Gulf of Siam. Qualitative Distribution of Radionuclides at Rongelap Atoll. Increase in Radioresistance of Fish to Lethal Doses with Advancing Embryonic Development. Factors Controlling the Distribution of the Rare Earths in the Environment and in Living Organisms. Iron and Cobalt in Ecology. BEST COPY AVAILABLE a seteeet ee, pees : eee tes eeee if Meetion ( $2 OU ay fo _ fete gp Y oD ome 5 —~.--..-Publishing Corporation and the American Institute of . Biological Sciences, New York, 1963. poi IOWINOD AYOINAANI HON 419 S.NVINCI SH a ATa Se qor Ce ° oo xo me | Some Aspects of the Biology of Zirconium.

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