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Pellet and Bone Accumulation at a Colony of Western Gulls (Larus occidentalis)
Steven D. Emslie and Sharon L. Messenger
Journal of Vertebrate Paleontology
Vol. 11, No. 1 (Mar. 28, 1991), pp. 133-136
Stable URL: http://www.jstor.org/stable/4523362
Page Count: 4