Cowan, G A <br/><br/>
Heavy methanes as atmospheric tracers.  [electronic resource] 

 -  Science (New York, N.Y.)  Mar 1976 
 - 1048-50 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0036-8075 
<br/><br/><label>Standard No.: </label>10.1126/science.191.4231.1048  doi