United Nations. Industrial Development Organisation, Vienna. <br/><br/>
The reduction of sulphur needs in fertilizer manufacture   

 - New York  The Auth.  1969 
 - 61p. 
 - Fertilizer industry series   monograph no.3 .
<br/><br/>  
<br/><br/><label>Dewey Class. No.: </label>338.16318  / Un58.RS