Pennsylvania. Bureau of Mines

NYPL:33433090921135

Coal mines and mining

Pennsylvania. Bureau of Mines

STANFORD:36105002893696

Pennsylvania. Bureau of Mines

CHI:64460377

Coal mines and mining

Pennsylvania. Department of Mines

UOM:39015039686533

Coal mines and mining

Pennsylvania. Dept. of Mines

PSU:000069202223

Coal mines and mining

Pennsylvania. Department of Mines and Mineral Industries / Pennsylvania. Dept. of Mines

UOM:39015075001670

Coal mines and mining

Pennsylvania State University. Department of Electrical Engineering

PSU:000017993791

Coal mines and mining

Pennsylvania State University. Department of Mineral Economics

MINN:30000010621955

Mines and mineral resources

Pennsylvania State University. Center for Air Environment Studies / American Society of Mechanical Engineers. Committee on Air-Pollution Controls / United States. National Air Pollution Control Administration / United States. Division of Air Pollution / United States. Environmental Protection Agency. Office of Air Quality Planning and Standards

UIUC:30112007651828

Air

Pennsylvania. Dept. of Mines

PSU:000069188138

Coal mines and mining

Pennsylvania State College. School of Mineral Industries. Division of Mineral Economics

UOM:39015007481669

Tin

Pennsylvania State University. Center for Air Environment Studies / United States. National Air Pollution Control Administration

MINN:30000010697963

Air

Pennsylvania. Bureau of Industrial Statistics

HARVARD:LI1XM6

Industrial statistics

Pennsylvania Bureau of Industrial Statistics

STANFORD:36105126548960

Industries

United States National Emergency Council for Pennsylvania

STANFORD:36105047294249

Pennsylvania

National Emergency Council (U.S.). Pennsylvania

NYPL:33433084460629

Pennsylvania

PSU:000060162823

Legislative journals

Pennsylvania. General Assembly. Senate

CHI:74617115

Pennsylvania

Pennsylvania. State Government Survey Committee

UIUC:30112069679964

Executive departments

Historical Records Survey of Pennsylvania

UOM:39015041064075

Archival resources

Pennsylvania. Dept. of Mines and Mineral Industries

UCAL:B2868906

Pennsylvania State University. Mineral Industries Experiment Station

UVA:X004998115

Mineral industries

Pennsylvania. Dept. of Mines

UOM:39015016781695

Coal mines and mining

Pennsylvania. Department of Mines and Mineral Industries / Pennsylvania. Dept. of Mines

UOM:39015075001514

Coal mines and mining

Pennsylvania. Department of Internal Affairs

PRNC:32101066029081

Meteorology

Pennsylvania. Office of the Attorney General

OSU:32437011316946

Attorneys general's opinions

Pennsylvania. Attorney General's Office

CORNELL:31924070216589

Attorneys general's opinions

Elchanan Cohn / Pennsylvania State University. Institute for Research on Human Resources

WISC:89033923087

Bituminous coal

Pennsylvania. Dept. of Internal Affairs

UOM:39015077082918

Public lands

Pennsylvania State University. Earth and Mineral Sciences Experiment Station

UGA:32108009508089

Mineral industries