TY  - ADVS
ED  - Open University.
ED  - University Media.
TI  - From periodotite to granite
PY  - 1979///
CY  - San Diego, Calif.
PB  - University Media
KW  - Physical geology
KW  - Rocks
KW  - Analysis
N2  - An examination of the various rock types and their origins
ER  -