Gas purification 
Gas purification 
 -  "vi, 278 p. : ill. ; 28 cm., hbk." 
 - New Delhi   Random Publications  2017 
<br/><br/><label>ISBN: </label>9789351119975 
<br/><br/><label>Dewey Class. No.: </label>665.7 SOM  / 22.665.7 SOM