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| 022 | _a0027 9358 | ||
| 040 | _aJPS | ||
| 090 | 0 | 0 | _aMAJ 910.5 NG |
| 245 | 0 | _aNational Geographic Vol. 225, no.3 March 2014 The truth about black holes | |
| 260 |
_aWashington, D.C. : _bNational Geographic Society, _c2014 |
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_a142p. _c26cm |
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| 650 | 1 | 0 | _aGeography -- Periodicals |
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