Masters, John <br/><br/>
Natural-gas resources of North America 

 - U. S. Geological Survey Professional paper, 1570 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Gaz naturel<br/>Analyse économique<br/>Réserve<br/>Réssource économique
<br/><br/><label>Subjects--Index Terms: </label>Etats Unis