Scientific American, v. 149, n. 4, 1933 |
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Scientific American, v. 150, n. 4, 1934 |
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Scientific American, v. 151, n. 1, 1934 |
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Scientific American, v. 151, n. 3, 1934 |
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Scientific American, v. 155, n. 1, 1936 |
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