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1by Fuller, James L.“... as supporting documentation for the Iowa Ornithologists' Union Quarterly Report of spring 1985....”
Published 1985
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2Published 1993“...Table of Contents Nebraska ornithologists' Union 1993 spring Meeting.30 Fall 1992 Occurrence Report...”
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3by Valery A. Buzun“... to those ornithologists who study their identification, systematics and speciation. A sharp discrepancy has...”
Published 2002
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