TY  - BOOK
AU  - Opler,Paul A.
TI  - A field guide to eastern butterflies
T2  - The Peterson field guide series
SN  - 039563279X
AV  - QL551 .E16 O643F
PY  - 1992///
CY  - Boston, Mass.
PB  - Houghton Mifflin
KW  - BUTTERFLIES
KW  - EAST (U.S.)
KW  - CANADA, EASTERN
KW  - GREENLAND
N1  - "Sponsored by the National Audubon Society, the National Wildlife Foundation, and the Roger Tory Peterson Institute"; Includes bibliographical references and index
ER  -