TY  - BOOK
AU  - Ruark,J.R.
AU  - Sohns,H.W.
AU  - Sohns,H.W.
ED  - United States of America. Department of the Interior
TI  - Gas combustion retorting of oil shale under anvil points lease agreement: Stage II
T2  - Bureau of Mines Report of Investigations
U1  - Archivo B952 0001767 
PY  - 1971///
CY  - United States of America
PB  - Bureau of Mines
KW  - Esquistos bituminosos
ER  -