TY  - BOOK
AU  - Pyle, Robert Michael.
TI  - The Audubon Society Field Guide to North American Butterflies
T2  - The Audubon Society field guide series
U1  - 595.789 
PY  - 1990/// [c.1981]
CY  - New York
PB  - Knopf
KW  - Mariposas
KW  - E.U.A
N1  - 59-224
ER  -