TY  - BOOK
AU  - Vankat,John L.
TI  - The natural vegetation of North America: an introduction 
SN  - 0471017701
PY  - 1979///
CY  - New York
PB  - John Wiley & Sons
KW  - Botany
KW  - North America
KW  - Ecology
KW  - Plant communities
ER  -