Drainage and use of methane from coal fields :  developments since 1956. 

 - 112 pages :  illustrations ;  24 cm 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Methane<br/>Firedamp
<br/><br/><label>LC Class. No.: </label>TN305  / .O74 1958 
<br/><br/><label>Gov. Doc. Class. No.: </label>OECD  D759u