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    Article

    Production by Cosmic Rays of Helium-3 in Meteorites

    THE helium content of iron meteorites varies from less than 10−9 c.c. to 4 × 10−5 c.c. per gm.1. Since their uranium and thorium content is fairly constant, this variation was considered as an indication of their...

    F. A. PANETH, P. REASBECK, K. I. MAYNE in Nature (1953)

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    Article

    Variations in the Chemical Composition of Stratosphere Air

    DR. K. F. CHACKETT, PROF. F. A. PANETH, P. REASBECK, B. S. WIBORG in Nature (1951)