2006. Sen, Colleen. Relief shown by shading. LNG trade routes are indicated. "December 2006." Includes graphs showing: "Global LNG trade." Tables of economic statistic... Houston, Tex. : Oil & Gas Journal, 2006.
    
  
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      Clason Map Co. Scale [ca. 1:1,267,000] Relief shown by hachures. "Principal auto roads shown in red. Oil and gas fields shown in orange."--Lower margin. Includes ... Clason Map Co.
    
  
    
      2003. Petroleum Economist Ltd. Deutsche Bank Relief shown by gradient tints. Depths shown by gradient tints.On upper left corner: Petroleum Economist Car... London : Petroleum Economist Ltd., 2003.
    
  
    
      2001. Ohio. Division of Geological Survey. State of Ohio, Department of Natural Resources, Division of Geological Survey. "Publication date: 02/01." Scale not given. "Larger versions of this... Ohio. Department of Natural Resources.
    
  
    
      1984. Oilfield Publications Limited Oilfields and gasfields located; oil and gas pipelines, both existing and proposed, located. Ledbury, England ; Houston, Tex. : Oilfield Publications Limited, 1984.