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008 | 170101s1976 xx 000 0 und d | ||
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245 | 0 | _aECOLOGICAL SYSTEMS AND THE ENVIRONMENT | |
250 | _a1 | ||
260 |
_aAMERICA _bHOUGHTON MIFFLIN _c1976 |
||
300 |
_a591 _ePrint |
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653 | _aECOLOGICAL SYSTEMS AND THE ENVIRONMENT | ||
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||
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