Coal : the other energy [kasetvideo]

Eitemau Tebyg

• Coal : the other energy [filem]
  Cyhoeddwyd: (1978)
• Field description of coal/
  gan: Dutcher, Russell R., et al.
  Cyhoeddwyd: (1978)
• Cost-effective drilling and blasting in surface coal mines/
  gan: Australian Mineral Foundation
  Cyhoeddwyd: (1985)
• Underground loudspeaker communication systems in coal mines
  gan: 8096 British Standards Institution
  Cyhoeddwyd: (1983)
• Explosion sensitivity and severity of South East Asian coals /
  gan: Wan Zaiton Wan Sulaiman, 1982- , author
  Cyhoeddwyd: (2014)