| 000 | 00397nam a2200133Ia 4500 | ||
|---|---|---|---|
| 008 | 130225s9999 xx 000 0 und d | ||
| 100 | _aChristensen, J.J. | ||
| 245 | _aStudies on the parasitism of helminthosporium sativum | ||
| 260 |
_aMinnesota _bMinnesota Agricultural Experiment Station _c1922 |
||
| 300 | _a52p. | ||
| 440 | _aAgricultural Experiment Stati | ||
| 901 | _a23989 | ||
| 942 |
_cB _2udc |
||
| 999 |
_c4440 _d4440 |
||