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| 008 | 241129b |||||||| |||| 00| 0 eng d | ||
| 020 | _a0-87044-498, 087044-503-0 | ||
| 040 | _c0 | ||
| 110 | _aDONALD J. CRUMP | ||
| 245 | _aSMALL INVENTIONS THAT MAKE A BIG DIFFERENCE | ||
| 264 | _aWASHINGTON DC, THE NATIONAL GEOGRAPHIC SOCIETY | ||
| 300 | _c104p, 275x240 | ||
| 942 |
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