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Year
1999
Citation

Dunning, J. B., Jr., R. K. Bowers, Jr., S. J. Suter, and S. E. Bock. 1999. Cassin's Sparrow (AIMOPHILA CASSINII). No. 471 IN A. Poole and F. Gill, eds. The birds of North America. The Birds of North America, Inc., Philadelphia, PA. 32pp.

Keywords
Reference Code
A99DUN01NACA