TY  - BOOK
AU  - Steffen,W.L.
TI  - Global change and the earth system: a planet under pressure 
SN  - 3540265945 :
U1  - 304.2 
PY  - 2005///
CY  - Berlin
PB  - Springer
KW  - Global environmental change
KW  - Nature
KW  - Effect of human beings on
KW  - Human ecology
N1  - Includes index
ER  -