TY  - BOOK
AU  - Barbour,Michael G.
AU  - Billings,W D.
TI  - North American terrestrial vegetation
SN  - 0521261988
U1  - 581.97 
PY  - 1988///
CY  - Cambridge
PB  - Cambridge University Press
KW  - Botany
KW  - North America
KW  - Ecology
KW  - Plant communities
KW  - Phytogeography
ER  -