TY  - BOOK
AU  - Simmons,I.G.(Ian Gordon),1937-
TI  - Changing the face of the earth: culture, environment, history
U1  - 304.2 
PY  - 1989///
CY  - Oxford
PB  - Basil Blackwell
KW  - Human ecology -- History.
Human beings -- Influence on nature
ER  -