TY  - BOOK
AU  - Gass,I.G.
AU  - Smith,Peter J.
AU  - Wilson,R.C.L.
ED  - Open University.
TI  - Understanding the earth: a reader in the earth sciences 
SN  - 0851413080 (pbk.)
U1  - 550 23
PY  - 1972/// [ Reprinted 1973 ]
CY  - Sussex
PB  - Published for the Open University by the Artemis Press
KW  - Earth sciences
N1  - Includes bibliographical references and index
ER  -