Dhar, D. N. <br/><br/>
Physical and chemical survey of coals of Jangalgali (ladda)coalfield) / 
D. N. Dhar, Y. P. Talwar and B. K. Sarin 
 - Dhanbad(Bihar) :  Central fuel research Institute,  1970 
 - Various paging ;  33 cm. 
 - Techincal report ;  no. 13 .
<br/><br/><label>Dewey Class. No.: </label>553.2072