Effect of 6a-methyl-17a-acetoxyprogesterone on synchronization of estrus and subsequent fertility in beef heifers /
Tilton, James Earl,1938-author.
Turman, E. J.(Elbert Jerome),1924-author.
Stephens, D. F.
North Dakota Agricultural Experiment Station (Fargo)
Title from front cover.
Includes bibliographical references (page 5).