Johansson, Allan <br/><br/>
Clean technology 

 - [s.l.]:   Lewis Publishers ,  1992 
<br/><br/><label>ISBN: </label>0873715039 
<br/><br/><label>Standard No.: </label>DVE-M9429 
<br/><br/><label>Universal Decimal Class. No.: </label>502.175