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| 008 | 170101s1971 xx 000 0 und d | ||
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| 245 | 0 | _aBIOLOGICAL NITROGEN FIXATION | |
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_aNETHERLAND _bTHE HAGUE MARTINUS NIJHOFF _c1971 |
||
| 300 |
_a590 _ePrint |
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| 653 | _aBIOLOGICAL NITROGEN FIXATION | ||
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