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_b42436 _a503 |
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| 100 | _aWORLD BOOK | ||
| 245 | _aTHE WORLD BOOK ENCYCLOPEADIA OF SCIENCE : CHEMISTRY TODAY | ||
| 260 |
_bWORLD BOOKS INC _c1987 |
||
| 300 | _a159 | ||
| 630 | _aTHE WORLD BOOK ENCYCLOPEADIA OF SCIENCE : CHEMISTRY TODAY | ||
| 730 | _aTHE WORLD BOOK ENCYCLOPEADIA OF SCIENCE : CHEMISTRY TODAY | ||
| 942 | _cBOOK | ||
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_c372788 _d372785 |
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