TY  - BOOK
AU  - Ford,E.B.
TI  - Butterflies
T2  - The New naturalist; a survey of British natural history
U1  - 595.789 23
PY  - 1957///
CY  - London
PB  - Collins
KW  - Butterflies
KW  - Mariposas
N1  - Bibliografía: p. 334-336
ER  -