TY  - BOOK
AU  - Perkins, Otho E.
TI  - Earth science: a cambridge work-A-Text
SN  - 0870659677
AV  - QE 28 .P47 1987 
PY  - 1987///
CY  - NewYork
PB  - Globe Book Company, Inc
KW  - Earth science
N1  - Include index
ER  -