| 000 | 00398nam a2200157Ia 4500 | ||
|---|---|---|---|
| 008 | 130223s9999 xx 000 0 und d | ||
| 080 | _a581.44:631.543.2:633.491 | ||
| 100 | _aWiersema, S.G. | ||
| 245 | _aEffect of stem density on potato productio | ||
| 260 | _aPeru | ||
| 260 | _c1987 | ||
| 300 | _a16 p. | ||
| 440 | _aNo. 1; International Potato Ce | ||
| 901 | _pS39382 | ||
| 942 |
_cB _2udc |
||
| 999 |
_c121019 _d121019 |
||