The rock dust remedy for coal mine explosions;
an open letter to the operators in the 27th bituminous district of Pennsylvania,
by Harry Phythyon ...
APA Citation
Phythyon, H. (1926). The rock dust remedy for coal mine explosions: an open letter to the operators in the 27th bituminous district of Pennsylvania. Belle Vernon, Pa.: Belle Vernon agency.
MLA Citation
Phythyon, Harry. The Rock Dust Remedy for Coal Mine Explosions: an Open Letter to the Operators In the 27th Bituminous District of Pennsylvania. Belle Vernon, Pa.: Belle Vernon agency, 1926.
Warning: These citations may not always be complete (especially for serials).