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Fig. 7. Mixed fission product (MFP) and radioisotope activity of jack rabbits colleeted from an area contaminated by fallout from the Nevada Test Site. From Larson
et al.
(1960).
eral applicability of such observations has not been determined. Field studies
based on the serial measurement of radioactivity on fallout contaminated
plants (Larson et al. 196?), have indicated that the decline of activity