作者: E. C. Hellgren , M. R. Vaughan , F. C. Gwazdauskas , B. Williams , P. F. Scanlon
DOI: 10.1139/Z91-134
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摘要: We collected blood samples from captive adult female black bears (Ursus americanus) at 10-day intervals during September–March in 1987–1988 and 1988–1989 (6 bears/year) Virginia. Ten of 12 bears...