TY  - BOOK
AU  - Jeffreys [harold], 
TI  - Earth Its Origin History And Physical Constitution, 3rd Edn
U1  - 372.86 
PY  - 1952///
CY  - New York
PB  - Cambridge University
KW  - General Stack
KW  - social science
KW  - EducationElementary education
KW  - Physics
ER  -