TY  - BOOK
AU  - Ernst, W. G.
AU  - 
TI  - Earth systems: processes and issues
SN  - 0-521-47895-2
U1  - 55 
PY  - 2000///
CY  - Cambridge
PB  - Cambridge University Press
KW  - Earth science
KW  - Environmental science
KW  - Geosphere
KW  - Hydrosphere
KW  - Atmosphere
KW  - Sky
KW  - Upper atmosphere
KW  - Air
KW  - Earth
KW  - Biosphere
ER  -