TY  - BOOK
AU  - Gass, I.G. .
AU  - Smith , Peter J. .
AU  - Wilson, R.C.L. .
TI  - Understanding the Earth: A Reader in the Earth Science
U1  - 910 
PY  - 1976///
CY  - London
PB  - The English Language Book Society
KW  - Geography-Earth Science
KW  - G-Geography
ER  -