Indian Standards Institution, New Delhi <br/><br/>
Indian standard specification for soda ash, technical   

 - 3rd Rev. 
 - New Delhi  The Auth.  1982 
 - 16p. 
 - IS  251-1982 .
<br/><br/>  
<br/><br/><label>Dewey Class. No.: </label>661.320212  / In39.IS