TY  - BOOK
AU  - Ver Wiebe,Walter August
TI  - North American petroleum: a complete summary of geological information on the occurrence..
PY  - 1952///
CY  - Kansas - EEUU
PB  - Edwards
KW  - Norteamerica
KW  - Petroleo
KW  - Gases minerales
KW  - Canada
KW  - Minas
KW  - Explotacion
KW  - Mineria
KW  - Mineralogia
KW  - America del Norte
KW  - Geologia
ER  -