(Continued from Page 1) Primary references concern Dr. Tobias' studies of the biological effects of radiation, including genetic composition in relation to radiation sensitivity; cancer; metabolism; and space radiation. Documents relevant to the survey include the following: Folder Title Contents "Tobias, C.A., et al. Draft paper. "Hamilton, Joseph G." "A Report of the Past, Present, and Future Research" for Project 484-1; "Some Biological Effects Due to Nuclear Fission.'" staff list, list of radioactive elements orally ingested by humans. "Ingram, M.L. and S.W. Barnes, ‘Observations on the Blood of Cyclotron Workers.'" “Harvey, Robert L., ‘Maximum Allowable Concentrations of Fission Products in the Air as a Function of Exposure Time and Time After Detonation." 9 Nov. 1951. Published report. Laboratory. Prog. Crocker Radiation CRL 1R64. 4-12-10~0002.