TY  - BOOK
AU  - Howell,JrBenjamin F., x
AU  - x
TI  - Introduction to geophysics: x
SN  - x
U1  - 551/HOI 
PY  - 1959///
CY  - N.Y.
PB  - McGraw-Hill
KW  - Geophysics
KW  - Geology
N1  - x
ER  -