| ID | 251566 |
| Call Number | X9J:8.7375/G3/046526 |
| Title Proper | The use of Efficiency Factory in Analysis of Farm Records |
| Language | ENG |
| Author | Hopkins J. A. |
| Publication | Agriculture Experinment Station Iowa State College, 1933. |
| Description | 176p |
| Series | Research Bulletin No. 160 |
| Classification Number | X9J:8.7375 |