TY  - BOOK
AU  - Vayda,Andrew P.
TI  - Explaining human actions and environmental changes
SN  - 978-0-7591-1900-0
U1  - 304.2 
PY  - 2009///
CY  - Lanham
PB  - Altamira Press
KW  - Human ecology
KW  - Enthnology
ER  -