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| 245 | _aMcGraw-Hill encyclopedia of science and technology. | ||
| 501 | _a7923 | ||
| 650 | _aScience - Encyclopedias. | ||
| 650 | _aTechnology - Encyclopedias. | ||
| 700 | _aEncyclopedia of science and technology | ||
| 250 | _a6th ed. | ||
| 260 |
_bMcGraw-Hill _c1987. |
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| 942 |
_cBK _oQ121 Mac. |
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| 999 |
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||