TY  - BOOK
AU  - Vale,Thomas R.
TI  - Plant and people: : vegetation change in North America
AV  - IRA QK110.V34 
PY  - 1982///
CY  - Washington, D.C
PB  - A.A.G
KW  - Botany
KW  - North America
KW  - Ecology
KW  - Vegetation dynamics
ER  -