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| 008 | 971013s1957 r 00010 d | ||
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_aGray, George W. _950494 |
| 245 | 1 | 4 | _aThe organizer |
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_aSan Francisco : _bFreeman, _c1957 |
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_a(11) p. _b: ilus |
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_aScientific American Offprints _v; 103 |
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| 500 | _a"Reprinted from Scientific American, November 1957" | ||
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_aDiferenciación (Biología) _932557 |
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_aEmbriología. _936486 |
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_aScientific American Offprints _v; 103 _9103328 |
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