Biosystems Analysis, Inc. - ECOLOGY OF BALD EAGLES IN ARIZONA, 4 volumes, complete.

Santa Cruz, CA: Biosystems Analysis, Inc, 1992, 1st edition. Pp. xviii, 235; xvi, 376, v, 202; vii, 343, v, 191; v, 245, 650+ maps, photos, text-figures and charts. Pictorial stiff wraps with a flying eagle on covers, 4to. Volume 1: Population Overview; Volume 2: Field Studies; Volume 3: History of Nesting Population; Volume 4: River Map Atlas. No ownership marks, a bright, clean copy in fine (as new) condition..

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