Wood, Gordon Jr <br/><br/>
Historical review of and current progress in coal-resource estimation in the United States 

<br/><br/> <Donation ORSTOM> 
<br/><br/>bibliogr. p. 528 
<br/><br/><label>ISSN: </label>00167606 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Coal measures<br/>Bassin Hoilleur<br/>Couche charbon<br/>Degré houllification<br/>Anthracite<br/>Lignite<br/>Charbon bitumineaux<br/>Réserve
<br/><br/><label>Subjects--Index Terms: </label>Etats Unis