Fuels of Western Canada and Their Efficient Utilization James White

Excerpt from Fuels of Western Canada and Their Efficient Utilization: Revised Edition, Read at the Second Professional Meeting of the Engineering Institute of Canada, Saskatoon, Sask;, August 8-10, 1918

Coal is, of course, much the most important Это и многое другое вы найдете в книге Fuels of Western Canada and Their Efficient Utilization (James White)