TY  - BOOK
AU  - Opler,Paul A.
AU  - Malikul,Vichai
ED  - National Audubon Society
ED  - National Wildlife Foundation
ED  - Roger Tory Peterson Institute
TI  - A field guide to eastern butterflies
SN  - 039563279X
PY  - 1992///
CY  - Boston
PB  - Houghton Mifflin
KW  - Butterflies
KW  - East (U.S.)
KW  - Canada, Eastern
KW  - Greenland
N1  - Spine title: Eastern butterflies; 'Sponsored by the National Audubon Society, the National Wildlife Foundation, and the Roger Tory Peterson Institute.'; Includes bibliographical references (p. 359-362) and index
ER  -