Black gold and friendship.

Eitemau Tebyg

• Black gold and friendship
  gan: Girija Kumar Sinha
  Cyhoeddwyd: (1972)
• Black gold : an intoduction to petroleum
  gan: Raje, Sudhakar
  Cyhoeddwyd: (1969)
• Black gold : the new frontier in oil for investors
  gan: George orwel
  Cyhoeddwyd: (2006)
• The age of oil : the mythology, history, and future of the world's most controversial resource /
  gan: Maugeri, Leonardo, 1964-
  Cyhoeddwyd: (2006)
• Hubbert's peak : the impending world oil shortage /
  gan: Deffeyes, Kenneth S.
  Cyhoeddwyd: (2001)