TY  - BOOK
AU  - Gass, I.G. Ed.;
AU  - Smith, Peter J. Ed.;
AU  - Wilson, R.C.L. Ed.;
TI  - Understanding the Earth : 
SN  - 851413080
U1  - 550 
PY  - 1972///
CY  - Sussex
PB  - The Open University Press
KW  - Earth sciences
ER  -