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| 020 | _a08-911-80648 | ||
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_aMoving up the yield curve: _b advances and obstacles : proceedings of a symposium sponsored by Divisions S-4, S-8, and A-4 of the American Society of Agronomy and the Soil Science Society of America |
| 260 |
_aMadison, WI (USA) : _bPublished by the American Society of Agronomy, Soil Science Society of America, _c1980 |
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| 300 | _a103 p | ||
| 340 | _aPrinted | ||
| 490 |
_aASA Special Publication ; _vNo. 39 |
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| 500 | _aill. Includes bibliographic references. "The papers were presented during the annual meeting in Chicago, Illinois, 3-8 December, 1978." | ||
| 546 | _aEnglish | ||
| 591 | _aCOMOD | ||
| 595 | _aAC | ||
| 650 | 1 | 0 |
_aPlant production _91212 |
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| 999 |
_c39509 _d39509 |
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