Clayton, Jerry <br/><br/>
Atmospheric methane flux from coals - Preliminary investigation of coal mines and geologic structures in the Black Warrior basin, Alabama 

 - U. S. Geological Survey Professional paper, 1570 .
<br/><br/>bibliogr. p. 491-492 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Méthane<br/>Charbon<br/>Géologie régionale<br/>Géochimie<br/>Stratigraphie<br/>Tectonique<br/>Elément non metallique
<br/><br/><label>Subjects--Index Terms: </label>Etats Unis  Alabama