TY - RPRT TI - Endocrine correlates of reproduction in the wolf. I. Serum progesterone, estradiol and LH during the estrous cycle AU - U.S. Seal AU - E.D. Plotka AU - J.M. Packard AU - L.D. Mech PY - 1979 DO - 10.1095/biolreprod21.5.1057 UR - https://pubs.usgs.gov/publication/5222119 ID - 5222119 ER -