| 000 | 00398nab a2200133Ia 4500 | ||
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| 003 | ES-SlBCS | ||
| 005 | 20210601142418.0 | ||
| 008 | 140529s1990 xxu||||| |||| 00| 0 spa d | ||
| 041 | _aspa | ||
| 100 | 1 |
_aWalgate, Robert _9269973 |
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| 245 | 0 | 0 |
_aAbdus Salam _c Robert Walgate |
| 773 | 0 |
_tInvestigacion y Ciencia (Traducción de: Scientific American) _gnº. 169, 1990, págs. 30 _wRev1650 |
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| 942 | _cAR | ||
| 999 |
_c676477 _d676477 |
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