| 000 | 00415 am a2200121 a 4500 | ||
|---|---|---|---|
| 100 | 1 | _aO'Brien, Muriel J. | |
| 245 | 1 | _aEvaluation of some potato varieties and breeding lines for resistance to early blight | |
| 260 |
_aWashington _c1971 |
||
| 300 | _a1-6 p. | ||
| 942 |
_2udc _cB |
||
| 440 | _aPotato, Varieties, Breeding United Sates Department of Agriculture. Production Research Report No. 140 | ||
| 901 | _aS22959 | ||
| 999 |
_c106359 _d106359 |
||