Peterson, Roger Tory,1908-1996
Peterson field guide to birds of North America /Roger Tory Peterson ; with contributions from Michael DiGiorgio ... [et al.].xiv, 527 p. :ill. (chiefly col.), col. maps
Includes index.
Revised and updated from "A field guide to the birds of Eastern and central North America, 5th ed. and "A field guide to Western birds, 4th ed.
1.Birds--North America--IdentificationDynamic Details