| 000 | 00363nam a2200109Ia 4500 | ||
|---|---|---|---|
| 008 | 140205s9999 xx 000 0 und d | ||
| 100 | _aYadav, R L (et al) | ||
| 245 | _aAnalysis of eco-regional production constraints in rice-wheat cropping system | ||
| 260 |
_bProject directorate for cropping systems research _aMeerut, U.P _c1998 |
||
| 300 | _a68 | ||
| 942 |
_2ddc _cTR |
||
| 999 |
_c5259 _d5259 |
||