• 1 Memorial Library

• 2 Books

• 1 Coal miners
• 1 Coal mines and mining
• 1 Coal trade
• 1 Energy conservation
• 1 Fuel
• 1 Fuel supplies
• 1 Women

• 1 Knoeppel, C. E. (Charles Edward), 1881-1936
• 1 National Conference on Labor Problems under War Conditions
• 1 Society of Industrial Engineers
• 1 United States. Fuel Administration
• 1 Western Education Society (U.S.)

• 2 English

• 2 United States

Limit year range