Harold J. Prostka / G. F. Embree

ERDC:35925003269369

Geology

Harold J. Prostka / J. C. Antweiler / Carl L. Bieniewski

IND:30000140461959

Mines and mineral resources

Arthur Edward Nelson / David L. Durham / Dwight Raymond Crandell / Harold J Prostka / Jacquelyn H. Freeberg / Robert James Dingman / Ronald Wayne Kistler / Robert K. Fahnestock / Watson Hiner Monroe

LCCN:gs66000245

Avalanches

Harold J. Prostka

OCLC:27288298

Geology

Zell E. Peterman

OCLC:1305870908

Geochemistry

Harold J. Prostka

OCLC:1305892152

Geology

Russell G. Tysdal / United States. Bureau of Mines / Willis Howard Nelson

LCCN:76600025

Coal

Geological Survey (U.S.) / Harold J. Prostka / Harry W. Smedes

OCLC:631688623

Etats-Unis. Geological Survey / Harold J. Prostka / J. C. Antweiler / C. L. Bieniewski

OCLC:1131730397

Harold J. Prostka

ERDC:35925000445269

Geology

Harold J. Prostka / J. C. Antweiler / Carl L. Bieniewski

IND:30000140461959

Mines and mineral resources

Harold J. Prostka / G. F. Embree

ERDC:35925003269369

Geology

Harold Lloyd James

UIUC:30112027302584

Beartooth Highway (Mont. and Wyo.)

Harold G. Coffin / Robert H. Brown

STANFORD:36105032775178

Religion

Betsy A. Weld / Donald B. Hoover / Geological Survey (U.S.) / Harold Edgar Thomas / Helen Laura Foster / James A. McConaghy / Jim S. Hinds / John Emery Wilson / John R. Ritter / Luna Bergere Leopold / Norman J. Page / Robert Sprague Jones / Thomas P. Miller / J. A. Dietrich / Leonard Benjamin Riley / Margaret S. Griffin / Michael Fleischer / Raymond L. Elliott / Richard R. Cunningham / George W. Brett / Joseph Haffty

OSU:32435030456073

Asbestos

Michael J. Abrams / James E. Conel / Harold R. Lang

STANFORD:36105032877941

Geology

Harold F. Bonham / Larry J. Garside

STANFORD:36105007725547

Geology