Call Number (LC) Title Results
I 28.27:7197 Chalk and whiting / 1
I 28.27:7198 Marketing natural mineral pigments / 1
I 28.27:7199 Some suggestions on the safe use of refrigerants / 1
I 28.27:7200 Strontium minerals / 1
I 28.27:7200-7225 Coal-mine explosions and coal- and metal-mine fires in the United States during the fiscal year ended June 30, 1941 / 1
I 28.27:7201 Novel first-aid instructors association / 1
I 28.27:7202 Marketing silica (quartz, tripoli, diatomite, etc.) / 1
I 28.27:7203 Development of the sand and gravel industry / 1
I 28.27:7204 Tentative coal-mine inspection standards / 1
I 28.27:7205 The legendary "White Metal" and its "ore" / 1
I 28.27:7206 New process for controlling mercury vapor / 1
I 28.27:7207 List of permissible mine equipment approved to January 1, 1942 / 1
I 28.27:7208 Coal-mine explosions and coal- and metal-mine fires in the United States during the fiscal year ended June 30, 1941 / 1
I 28.27:7209 Findings from major studies of fatigue / 1
I 28.27:7210 Standard methods for measuring extent of atmospheric pollution / 1
I 28.27:7211 Pointers on the storage of coal / 1
I 28.27:7212 Sodium carbonate / 1
I 28.27:7213 Dredging Pennsylvania Anthracite.
Dredging Pennsylvania anthracite / 		2
I28.27..7213 Dredging Pennsylvania Anthracite. 1
I 28.27:7214 Questions and answers on storage of coal in the Rocky Mountain area / 1