The effect of the age of sire and dam on the quality of offspring in dairy cows... Allen, Charles Loring, 1889- creator text book Washington, D. C 1922 1922
print
ENG Thesis (Ph.D.--Cornell univesity, 1920. "Reprinted from the Journal of heredity ... vol. XIII, no. 4; Washington, D.C., April, 1922." Cattle Heredity SF201 .A5 https://www.biodiversitylibrary.org/bibliography/36851 23009290 10.5962/bhl.title.36851 DLC