| ID | 251611 |
| Call Number | X9J:84,D.7375/H/046549 |
| Title Proper | Life, Serviece and the Cost of Service of farm Machines on 400 Iowa Farms |
| Language | ENG |
| Author | Davidson J. B. ; Henderson S. M. |
| Publication | Agriculture Experinment Station Iowa State College, 1942. |
| Series | Bulletin P 37 (New Series) |
| Classification Number | X9J:84,D.7375 |