TY  - BOOK
AU  - Howell, Jesse V.
AU  - Levorsen, A. I.
TI  - DIRECTORY OF GEOLOGICAL MATERIAL IN NORTH AMERICA
U1  - 550.58 
PY  - 1957///
CY  - Washington
PB  - American Geological Institute
KW  - Geology -- Direct
N1  - The First Edition Was Published In 1946 As Part 2 Of The Bulletin Of The American Association Of Petroleum Geologists, Volume 30, Number 8
ER  -