Whitaker, John O. frey50
The Audubon Society field guide to North American - Random House 1980
0-394-50762-2
Mammals--North America--Identification
ELMAN, ROBERT
NATIONAL AUDUBON SOCIETY
FIELD GUIDE TO NORTH AMERICAN MAMMALS
SERIES: AUDUBON SOCIETY FIELD GUIDE
The Audubon Society field guide to North American - Random House 1980
0-394-50762-2
Mammals--North America--Identification
ELMAN, ROBERT
NATIONAL AUDUBON SOCIETY
FIELD GUIDE TO NORTH AMERICAN MAMMALS
SERIES: AUDUBON SOCIETY FIELD GUIDE