U10 Upton, A.C., M.L. Randolph, E.B. Darden, Jr., et al. Relative biological effectiveness of fast neutrons for late somatic effects in mice, p. 337-345 in Biological Effects of Neutron and Proton Irradiation, Vol.II. IAEA pub- lication STI/PUB/80. U14 Vienna, 1964. Upton, A.C., F.F. Wolff, J. Furth et al. A comparison of the induction of myeloid and lymphoid leukemias in x-radiated RF mice. Cancer Res. 18: 842-848 (1958). Ule Upton, A.C., J.W. Conklin and R.A. Popp. Influence of age at irradiation on susceptibility to radiation-induced life-shortening in RF mice. p. 337-344 in Radiation and Aging (P.J. Lindop and G.A. Sacher, eds.). Francis Ltd., London, 1966. U13 Ulrich, H. Incidence of leukaemia in radiologists. u14 United Nations. 45-46 (19h6). New Engl. J. Med. 234: Sources and Effects of Ionizing Radiation. United Nations Scientific Committee on the Effects of Atomic Radiation 1977 report to the General Assembly, with annexes. United Nations sales publication no. E.77.IX.I. U15 Taylor and New York, 1977. United Nations. Jonizing Radiation: Levels and Effects. A report of the United Nations Scientific Committee on the Effects of Atomic Radiation to the General Assembly, with annexes. United Nations sales publication No. E.72.1X.17 and 18. New York, 1972. v1 Vogel, H.H., Jr., N.A. Frigerio and D.L. Jordan. Life-shortening in mice V2 Van Putten, L.M. and M.J. De Vries. V3 Vogel, H.H. and D.L. Jordan. Thymic lymphoma incidence and longevity of female mice irradiated with either fission neutrons or cobalt-60 gamma rays at different dose rates. U.S. Atomic Energy Commission report irradiated with either fission neutrons or cobalt-60 gamma rays. Radiology 77: 600-612 (1961). Cancer Inst. 28: 587-598 (1962). Strontium-90 toxicity in mice... J. Natl. TID-15850 (1962). v4 Vogel, H.H., Jr. and D.L. Jordan. Thymic tumour incidence and longevity of female mice irradiated with either fission neutrons or cobalt-60 gamma V5 V6 Wi Vienna, 196}. Vogel, H.H. and D.L. Jordan. mice with fission neutrons and 114: 185-188 (196). VT Acta Un. Int. Cancer 20: 1159-1163 (1964). Vogel, H.H. Jr., and D.L. Jordan. Fractionated, low dose-rate irradiation of mice with fission neutrons and Co gamma rays, p. 275-281 in Biological Effects of Neutrons and Proton Irradiations, Vol. II. IAEA publication STI/PUB/80. —_ » rays at different dose rates. .Van Cleave, C.D. F Actionated, low-dose rate irradiation of ~°“Co gamma rays. Ann. New York Acad. Sci. Late Somatic Effects of Ionizing Radiation. Energy Commission, Division of Technical Information. Walburg, H.E. U.S. Atomic Oak Ridge, 1968. Radiation-induced life-shortening and premature aging. Adv. Radiat. Biol. 7: 145-179 (1975).