Basak, P.K <br/><br/>
Indian Coals; quality evaluation data Vol. 6 Chirimiri, Sohagpur, johilla river, Umaria, Pench-Kanhan-Tawa valley & Mohpani coalfields 

 - Dhanbad  CFRI  1979 
 - xvii+406p 
<br/><br/><label>Universal Decimal Class. No.: </label>662.62(540)  / CEN,6.79