TY  - BOOK
AU  - Marshall, Robert H.
AU  - Rosskopf, Allen.
TI  - Earth science / 
SN  - 0785409955
U1  - 550 22
PY  - 2001///
CY  - Circle Pines
PB  - American Guidance Service
KW  - Environment
KW  - Earth science
KW  - Solar system
KW  - Earth chemistry
KW  - Earth atmosphere
KW  - Weather & climate
KW  - History - Earth
N1  - Environment
ER  -