Singh LR <br/><br/>
Professor R.N Dubey memorial lectures 
Singh LR 
 - Allahabad  R.N.Dubey Foundation           1996 
 - xv,Various pagination  cm. 
<br/><br/> Bibliography Chapterwise 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Dewey Class. No.: </label>U.2, N6