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  - 0262570386 (pbk.)
PY  - 1972///]
CY  - Cambridge, Mass.
PB  - M.I.T. Press
KW  - Earth sciences
N1  - "An Open University book."
ER  -