CONTROL OF OVULATION, FERTILITY AND ENDOCRINE RESPONSE AFTER PROSTAGLANDIN F2α IN CATTLE T. M. LOUIS, H. D. HAFS and J. N. STELLFLUG Ann. Biol. anim. Bioch. Biophys., 15 2 (1975) 407-417 DOI: 10.1051/rnd:19750230