Callahan, C.J., Horstman, L.A. and Frank, D.J. 1988. A Comparison of fenprostalene and oxytetracycline as treatment for retained fetal membranes in dairy cows. The Bovine Practitioner. 23 (Nov. 1988), 21–23. DOI:https://doi.org/10.21423/bovine-vol0no23p21-23.