机译:Analysis of urinary immunoreactive steroid metabolites and gonadotropins for characterization of the estrous cycle, breeding period, and seasonal estrous activity of captive killer whales (Orcinus orca)
机译:Great cats. A review ofThe Natural History of the Wild Cats, by Andrew Kitchener. Ithaca, New York, Cornell University Press, 1991, 280 pp., $27.50, hardbound