Call Number (LC) Title Results
C 22.3:270 Production of sponge iron
Production of sponge iron. 		2
C22.3-270 Production of sponge iron. 1
C 22.3:271 Problems in firing of refractories
Problems in firing of refractories. 		2
C22.3-271 Problems in firing of refractories. 1
C 22.3:272 Safeguarding workmen at oil derricks
Safeguarding workmen at oil derricks. 		2
C22.3-272 Safeguarding workmen at oil derricks. 1
C 22.3:273 Drilling and blasting in open-cut copper mines
Drilling and blasting in open-cut copper mines. 		2
C22.3-273 Drilling and blasting in open-cut copper mines. 1
C 22.3:274 Potash mining in Germany and France
Potash mining in Germany and France. 		2
C22.3-274 Potash mining in Germany and France. 1
C 22.3:275 Coal-mine fatalities in U.S., 1925. 1
C22.3-275 Coal-mine fatalities in U.S., 1925. 1
C 22.3:276 Five hundred tests of various coals in house-heating boilers
Five hundred tests of various coals in house-heating boilers. 		2
C22.3-276 Five hundred tests of various coals in house-heating boilers. 1
C 22.3:277 Safety in coal mining handbook.
Safety in coal mining : handbook. 		2
C22.3-277 Safety in coal mining : handbook. 1
C 22.3:278 Magnetic concentration of iron ores of Alabama
Magnetic concentration of iron ores of Alabama. 		2
C22.3-278 Magnetic concentration of iron ores of Alabama. 1
C22.3-279 Limits of inflammability of gases and vapors. 1
C 22.3:279/ [rev.] Limits of inflammability of gases and vapors
Limits of inflammability of gases and vapors. 		2