| 000 | 00350nam a2200133Ia 4500 | ||
|---|---|---|---|
| 008 | 130225s9999 xx 000 0 und d | ||
| 100 | _aHeadden, WM. P. | ||
| 245 | _aFixation of nitrogen in some Colorado soils | ||
| 260 |
_aFort Collins _c1910 |
||
| 300 | _a1-48 p. | ||
| 440 | _aColorado Agricultural Experim | ||
| 901 | _a18785 | ||
| 942 |
_2udc _cB |
||
| 999 |
_c18389 _d18389 |
||