| 000 | 00509nam a2200157Ia 4500 | ||
|---|---|---|---|
| 008 | 140205s9999 xx 000 0 und d | ||
| 020 | _a085198 340 5 | ||
| 082 | _a631.416/ROB | ||
| 100 | _aRobinson, J. B. D | ||
| 245 | 4 | _aThe soil nitrogen index and its calibration with crop performances to improve fertilizer efficiency on arable soils | |
| 260 |
_bCommonwealth Agricultural Bureaux _aSlough _c1975 |
||
| 300 | _a53 | ||
| 650 | _anitrogen fertilizers | ||
| 650 | _asoil nitrogen content | ||
| 942 |
_2ddc _cBK |
||
| 999 |
_c891 _d891 |
||