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_a574.192 _bS577b |
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_aSigma Chemical Company _9125893 |
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_aBiochemicals Organic Compounds: For Research and Diagnostic Reagents / _cSigma Chemical Company |
| 260 |
_aEstados Unidos : _bSigma Chemical Company , _c1991 |
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_a2144 p. _b: il.; tbs. |
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_aBIOQUIMICA - CATALOGOS _9125894 |
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_aPRODUCTOS QUIMICOS - CATALOGOS _9125895 |
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_aCOMPUESTOS ORGANICOS - CATALOGOS _9125896 |
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