E. J. Babcock1865 · 4 obras en el catálogoObrasWater resources of the Devils Lake region, North DakotaNNorth Dakota coals and clays as factors in industrial develoNorth Dakota coals and clays as factors in industrial developmentEEconomic methods of utilizing western lignitesEconomic methods of utilizing western lignitesPProduction and briquetting of carbonized ligniteProduction and briquetting of carbonized lignite
NNorth Dakota coals and clays as factors in industrial develoNorth Dakota coals and clays as factors in industrial development
