Chhatwal,G.R.Ed., <br/><br/>
Encyclopedia of scientific and technical terms;vol.4 

 - New Delhi  Anmol Publications  1987 
 - v4.  HB  22cm. 
<br/><br/><label>ISBN: </label>8170410444 
<br/><br/><label>Dewey Class. No.: </label>503.21  / ENC