19 10" cel44_p 440 cei37 Sbl25) Fylds | ' spi2s5 spies | w ~~ S £ = fae wy Ou £ Cc 3 ° oO 4 @ Zz 9-10" 10<l Fig. 9, | 1 05 MEV 1.0 J 15 Gamma-ray spectra of equal amounts of young soil from different depths.

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