TY  - BOOK
AU  - Little, Elbert L.
TI  - National Audubon Society field guide to North American trees 
SN  - 0-394-50760-6.
AV  - QK474.8.N53 
CY  - New York
KW  -  Plants
KW  -  Woody plants
KW  - Botany
KW  - Trees
ER  -