| 000 | 00377nam a2200133Ia 4500 | ||
|---|---|---|---|
| 008 | 130225s9999 xx 000 0 und d | ||
| 100 | _aWalker, Rudger H. | ||
| 245 | _aPhysiological studies on the nitrogen fixing bacteria of the genus rhizobium | ||
| 260 |
_aAmes _c1928 |
||
| 300 | _a369-406 p. | ||
| 440 | _aIowa Agricultural Experiment | ||
| 901 | _a21951 | ||
| 942 |
_cB _2udc |
||
| 999 |
_c3741 _d3741 |
||