| 000 | 00448 a2200133 4500 | ||
|---|---|---|---|
| 100 | 1 | _aDean, G.W. | |
| 245 | 1 | _aEconomic optima in soil conservation farming and fertilizer use for farms in the Ida-Monona soil area of Western Lowa | |
| 260 |
_aAmes _c1958 |
||
| 300 | _a176-196 p. | ||
| 440 | _aIowa Agricultural Experiment Station. Research Bulletin No. 455 | ||
| 650 | _aEconomic, Soil, Farming, Fertilizers | ||
| 942 |
_2udc _cB |
||
| 901 | _a56350 | ||
| 999 |
_c55764 _d55764 |
||