160°E | 14°N | 19 13 oe e 8 1,6 @ @ 021 ° O 1@ O 1. > 10°N ' 28 160°E 167°E | CO] oO O © O oO © O O O O O © © © O O 39 © O natu O oO Eni 28 O Ujelene Atoll tok 14 6——O -021 Rongelap [seit | O o2f Shean? Atoll L4°N CT ~ ° O—-O | 10°N 167°E d/m/g in millions/gm dry weight Fig. 3. ' B Chart of the Collett survey stations. Stations at which plankton contained wi85 are shown as solid circles. W185 disintegration rates are in millions per gram dry weight of plankton.

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