{[VoL. 91 le assistance +, Thomas G. iany helpful ichard Row. Kehrer and J thanks are he National ‘at the 18th 7, 1962, 1964] WARTIN :- RADIOECOLOGY AND STUDY OF ENVIRONMENTAL RADIATION 321 21. Dunning, G. M. & J. A. Hilkin (eds.) 1956. Symposium on the shorter-term biological hazards of a fallout field. Dee. 12-14, 1956. U. 8. Gov’t. Printing Office, Washton, D. ¢. 22, French, N. R. 1959. Iodine metabolism in wild jack rabbits. in: Oklahoma Conference on Radioisotopes in Agriculture, TID-7578: 113-21. 23. Fried, Maurice & W. R. Heald. 1959. Radioisotopes in soils: soil-plant relationships. wm: # 13, p 47. 24. Fry, L. & P. K. Kuroda. 1959. Stratospheric fallout of strontium-89 and barium-140, Seience 129; 1742-3. 25. Glasstone, Samuel (ed.) 1957. The effects of nuelear weapons. U. 8. Gov’t. Print- ing Off., Washington, D. C. 579 pp. 26. Greenfield, 8S. M. 1957. Rain scavenging of radioactive particulate matter from the nent on radio- atmosphere. Jour. Meteorol. 14: 115-25. 27. Hope, A. B. 1959. Radioisotopes in plants: root entry and distribution. in: # 13, p 60. l. Ft. Collins, the USAEC). 28. Hansen, R. 0. et al. 1959. Radioisotopes in soils: physical-chemical composition. , reference to 29. Health and Safety Laboratory, A.E.C. 1958. Environmental contamination from stive isotopes. 30. Hess, V. F. 1943. On the radon content of the atmosphere and the radium content and airborne iperation Tea- 31, Hursh, J. B. 1955. The natural radioactivity of man. in: # 13, p 23. ‘weapons tests. of river water. Terrestrial Magnetism and Atmos. Elect. 48: 203Bio-assay & Anal. Chem, Mtg., Nat’l Lead Co, Oct, 6-7, 1955: 110-23. . Kinsman, Simon (ed.) 1957. Radiological health handbook. tvey of areas id during the . Kulp, J. L. et al. 1960. Strontium-90 in Man, IV. im: # 83, ests. PB-121784. . Koval, G. 1945, Determination of particulate airborne long-lived activity. MDDC1503, . Knapp, H. A. 1961. The effeet of deposition rate and cumulative soil level on the concentration of stronttum-90 in U. 8. milk and food supplies. TID-13, 945. UCLA-32, RNL-1783. 3% HASL-42. Science 132: 448-54. . Kuroda, P. K. et al. 1960. Spring Peak of Sr-90 fallout. Science 132: 743, Cd . Langham, Wright & E. C. Anderson, 1958. Entry of radioactive fallout into the Science ifie ionization biosphere and man. in: # 29, p 282. & tests through 1958. . 1959. Biospherie contamination from nuclear weapons in: # 83, p 1067. d the eoncen185: 498-500. . Larson, K. H. et al. 196?. Radioecological aspects of nuclear fallout. (In preparation, will be published as WT-1488). 40, . 1960. Summary statement of findings related to the distribution, characteristics, and biological availability of fallout debris originating from 1147. activity after 41. otopes in the testing programs at the Nevada Test Site. UCLA-438. » 1962. Nevada Test Site fallout: some characteristics, its apparent -acifie Island environmental equilibrium and biological availability. (Mss. to be published ag a WT-document.) 42. Leipunsky, O. I. 1959. Radioactive hazards from clean hydrogen bomb and fission #49) Horn- 43. Libby, W. F. 1955. Dosages from natural radioactivity and cosmic rays. 27: 139-143. ig to society. 44. atomic bomb explosions. 45. in: # 83, p 2423. Seience 122: 57-58. - 1956a. Current research findings on radioactive fallout. Proce. Nat. Aead. Sei. 43: 945-62. 1956b. Radioactive strontium fallout. Proe. Nat. Acad. Sci. 42: 365-90. “Oe