| 000 | 00341nam a2200109Ia 4500 | ||
|---|---|---|---|
| 008 | 220204s9999 xx 000 0 und d | ||
| 082 |
_a631.8(1-773) _bSEC |
||
| 245 | 0 | _aFertilizers and high yielding varieties of rice wheat and maize in the developing countries | |
| 260 |
_aZurich _bCentre dEtude _c1970 |
||
| 650 | _aFertilizers | ||
| 942 | _cBK | ||
| 999 |
_c22115 _d22115 |
||