TY  - GEN
AU  - Peterson, Roger Tory, 1908-
TI  - A field guide to the birds, giving field marks of all species found east of the Rockies; text and illustrations by Roger Tory Peterson
AV  - QL 681 .P45 1947 
KW  - Birds--North America. 47-5163
KW  - Bibliographical references included in preface. "Home reference suggestions": p. 273-274
N1  - 2d rev. and enl. ed. Sponsored by National Audubon Society. xxiv, 290 p. illus., plates. (part col.) map. 19 cm
ER  -