Ralph Homeward Espach
Unknown Author
United Nations. Economic Commission for Asia and the Far East
S. Robert Bereskin
United States. Energy Information Administration.
M. Safei Siregar
Dudley H. Cardwell
Carol Morgans Tremain Ambrose
United States. Bureau of Land Management
West Texas Geological Society. Symposium
J. O. Robertson
Keith W. Shanley
Nihon Bōeki Shinkō Kikō
Wyoming Geological Association
United States. Bureau of Land Management.
Oklahoma City Geological Society.
Hafeez Rahman