Please refer to the [Transcriber's Notes] at the end of this document.
PRESERVATION
OF BULL SEMEN
AT SUB-ZERO TEMPERATURES
| By | N. L. VanDemark |
| W. J. Miller | |
| W. C. Kinney, Jr. | |
| Carlos Rodriguez | |
| M. E. Friedman |
Bulletin 621
UNIVERSITY OF ILLINOIS
AGRICULTURAL EXPERIMENT STATION