TY  - BOOK
AU  - 
ED  - The Open University
TI  - The earth: structure, composition and evolution
U1  - 550 
PY  - 1981///
CY  - Milton Kaynes
PB  - The Open University Press
KW  - Earth science
N1  - Science: A Second Level Course; Contents:Block 7. The eath's origin and evolution
ER  -