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_aRobinson, J. B. D. _997993 |
| 245 | 1 | 4 | _aThe soil nitrogen index and its calibration with crop performance to improve fertilizer efficiency on arable soils |
| 260 |
_aSlough : _bCommonwealth Bureau of Soils, _c1975 |
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| 300 | _a53 p. | ||
| 490 | 0 |
_aSpecial publication _v; 1 |
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_aBATCH-UPD _b10 _c20130110 _lUCH01 _h0041 |
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_aBATCH-UPD _b10 _c20130110 _lUCH01 _h0727 |
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_aBATCH-UPD _b10 _c20130409 _lUCH01 _h2027 |
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_aCONVERSION _b10 _c20130109 _lUCH01 _h1327 |
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| 650 | 1 | 4 |
_aNitrógeno _xEfecto en plantas. _981457 |
| 650 | 1 | 4 |
_aSuelos _xNitrógeno en. _9110451 |
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_aSpecial publication _v; 1 _9109152 |
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