The coal resources of the world. Atlas /

Eitemau Tebyg

• The coal resources of the world : an inquiry made upon the initiative of the Executive Committee of the XII International Geological Congress, Canada, 1913 : with the assistance of geological surveys and mining geologists of different countries /
  Cyhoeddwyd: (1913)
• Atlas für angewandte Steinkohlenpetrographie /
  Cyhoeddwyd: (1951)
• Coal : report on overseas investigations into methods of working thick coal seams, solid stowage, mechanization, practices generally in coal mines, oil from coal and amenities for miners /
  gan: James, Rowland
  Cyhoeddwyd: (1946)
• Coal in decline.
  gan: Conner, Alex
  Cyhoeddwyd: (1962)
• Surface coal mining technology : engineering and environmental aspects /
  Cyhoeddwyd: (1981)