| 000 | 00417nam a2200145Ia 4500 | ||
|---|---|---|---|
| 008 | 141013s9999 xx 000 0 und d | ||
| 080 | _a633;338;01 | ||
| 100 | _aGibbbs, Martin | ||
| 245 | _aCrop Productivity Research Imperatives Revisited | ||
| 260 |
_c1985 _aLondon _bInternational Services For National Agricultural Research |
||
| 300 | _aPT 465 | ||
| 546 | _aENG | ||
| 650 | _aCropCrop Science | ||
| 942 |
_2udc _cBK |
||
| 999 |
_c1941 _d1941 |
||