TY  - BOOK
AU  - Gass, I.G.
AU  - Smith, Peter J.
AU  - Wilson, R.C.L.
TI  - Understanding the earth: a reader in the earth sciences 
SN  - 851413099
U1  - 550 
PY  - 1972///
CY  - Sussexx
PB  - The Artemis Press Limited
KW  - Earth sciences.
KW  - Earth's magnetic field
N1  - Includes index
ER  -