Pashin, J. C. (1991). Regional analysis of the Black Creek-Cobb coalbed-methane target interval, Black Warrior basin, Alabama. Geological Survey of Alabama.
Citace podle Chicago (17th ed.)Pashin, Jack C. Regional Analysis of the Black Creek-Cobb Coalbed-methane Target Interval, Black Warrior Basin, Alabama. Tuscaloosa, Ala.: Geological Survey of Alabama, 1991.
Citace podle MLA (8th ed.)Pashin, Jack C. Regional Analysis of the Black Creek-Cobb Coalbed-methane Target Interval, Black Warrior Basin, Alabama. Geological Survey of Alabama, 1991.
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