Coal

Antzeko izenburuak

• Coal /
  nork: Court, W. H. B.
  Argitaratua: (1951)
• Coal : Typology /
  nork: Vankrevelen, Dw
  Argitaratua: (1961)
• Science and technology of coal and coal utilization /
  Argitaratua: (1984)
• The Nature and Origin of coal and coal Seams
  nork: Raistrick, A. and Marshall C.E
  Argitaratua: (1952)
• Indian coal industry and the coal miners
  nork: Murty,B S
  Argitaratua: (1988)