one een REFERENCES Lowder, W. M., Beck, H. L., and Condon, W. Spectrometric Determination of Dose Rates Nature, 202, 745-749 (1964) J. Beck, H. L., Condon, W. J., and Lowder, W. M. Spectrometric Techniques for Measuring Environmental Gamma Radiation . USAEC Report HASL-150, October (1964) Beck, H. L., Lowder, W. M., Bennett, B. G., and Condon,w. Purther Studies of External Environmental Radiation USAEC Report HASL-170, March (1966) Beck, H. L. Environmental Gamma Radiation from Deposited Fission Products, 1960-1964 Health Physics, 12, Beck, H. 313-322 (1966) L. Unpublished Gamma-Ray Transport Calculations Gale, H. J., Humphreys, D. L. U., and Fisher, The Weathering Of Caesium 137 in Soil AERE-R-4241, July (1963) Squire, H. M., and Middleton, Behaviour of Cs**” in Soils Experiment Radiation Botany, 6, 413-423 - 44 - L. E. M. R. J. and Pastures; a Long Term (1966) J.