"Geological Survey (U.S.)" . . "Explosive Agents." . . "Coal Mining." . . . . . . . "A Primer on explosives for coal miners, by Charles E. Munroe and Clarence Hall" . . . . . "Primer on explosives for coal miners" . . . "A primer on explosives for coal miners"@en . "A primer on explosives for coal miners" . "A Primer on Explosives for Coal Miners. [With nine plates.]"@en . . . . . . . . . . . . . .