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      Scientific American April 1974

      The Amateur Scientist, April 1974

      Curious bubbles in which a gas encloses a liquid instead of the other way around

      • By C. L. Stong on April 1, 1974

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      More in the April 1974 issue of Scientific American
      • Bibliography, April 1974
      • Science and the Citizen, April 1974
      • The Embryo As a Transplant
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