| 000 | 00583 a2200193 4500 | ||
|---|---|---|---|
| 245 | 1 | _aSubstitution relationships, resource requirements and income variability in the utilization of forage crops | |
| 260 |
_aAmes _c1952 |
||
| 650 | _aSubstitution | ||
| 650 | _aRelationships | ||
| 650 | _aResource | ||
| 650 | _aRequirements | ||
| 650 | _aIncome Variability | ||
| 650 | _aForage Crops | ||
| 100 | 1 |
_aHeady, Earl O., Olson, Russel O. _d |
|
| 300 | _a867-938 p. | ||
| 440 |
_aNo. 390 _vIowa Agricultural Experiment Station, Research Bull |
||
| 942 |
_2udc _cB |
||
| 901 | _a35855 | ||
| 999 |
_c55704 _d55704 |
||