Stutzer, Otto <br/><br/>
Geology of coal. 

 - Chicago :  The University,  1940. 
 - 461 p. :  il. ;  24 cm 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Substancias útiles<br/>Carbón
<br/><br/><label>Index Terms--Genre/Form: </label><br/>Libro
<br/><br/><label>Universal Decimal Class. No.: </label>552.57