Report on prices of coal and soft coke and pricing system for washed coal and Washery by products 
/ The Manager of Publications 
 - New Delhi:   The Manager of Publications,   1969 
 - 226p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Management
<br/><br/><label>Subjects--Index Terms: </label>Report 
<br/><br/><label>Universal Decimal Class. No.: </label>662(540)  / K7