TY  - BOOK
AU  - Petrides,George A.
TI  - A field guide to trees and shrubs: field marks of all trees, shrubs, and woody vines that grow wild in the north /astern and north-central United States and in south-eastern and south-centralCanada 
SN  - 0395136512
PY  - 1972///
CY  - Boston
PB  - Houghton Mifflin
KW  - Trees
KW  - United States
KW  - Identification
KW  - Shrubs
KW  - Canada
KW  - Climbing plants
ER  -