| 000 | 00391nam a2200145Ia 4500 | ||
|---|---|---|---|
| 001 | MPKV024544 | ||
| 008 | 120911s9999 xx 000 0 und d | ||
| 100 | _aHard R G | ||
| 245 |
_aOpportunities for increasing crop yields _cHard R G; |
||
| 246 | _aOpportunities for increasing crop yields | ||
| 260 |
_aLondon _bPitman Pub. _c1980 |
||
| 300 | _a410 | ||
| 365 | _b382.5 | ||
| 700 | _aHard R G | ||
| 999 |
_c23542 _d23542 |
||