India. Railway (Ministry of). R.D.S.O., Lucknow. <br/><br/>
Commercial outlets for utilisation of coal ash /(by) India. Railways (Ministry of). Research Desings and Standards Organisation, Lucknow.   

 - Lucknow.  Ministry of Railways  1966 
<br/><br/><label>Dewey Class. No.: </label>662.  / 62 N661