TY  - BOOK
AU  - Gilpin,Joseph Elliott
AU  - Bransky,Oscar Ellis
TI  - The diffusion of crude petroleum through fuller's earth with notes on its geologic significance,
T2  - U.S. Geological survey. Bulletin 475
AV  - QE75 .B9 no. 475
PY  - 1911///
CY  - Washington
PB  - Govt. Print. Off.
KW  - Petroleum engineering
KW  - Fuller's earth
ER  -