| 000 | 00444nam a2200145Ia 4500 | ||
|---|---|---|---|
| 008 | 140208s9999 xx 000 0 und d | ||
| 044 | _aPeru | ||
| 080 | _a635.217 8 V286S | ||
| 100 | _avan der Zaag, Peter | ||
| 245 |
_aSoil fertility requirements for potato production _cPeter, Vander Zaag |
||
| 260 |
_bInternational Potato Center _aLima _c1981 |
||
| 300 | _a20p.; 22cm. | ||
| 490 | _a(Technical information bulletin; 14) | ||
| 942 |
_2udc _cPB |
||
| 999 |
_c19117 _d19117 |
||