TY  - BOOK
AU  - Turner,B.L.
TI  - The earth as transformed by human action: global and regional changes in the biosphere over the past 300 years 
SN  - 0521363578 :
U1  - 301.24 
PY  - 1990///
CY  - Cambridge
PB  - Cambridge University Press with Clark University
KW  - Nature
KW  - Effect of human beings on
KW  - Human ecology
KW  - Global environmental change
KW  - Population
N1  - Includes index
ER  -