Sehgal, R. L. <br/><br/>
Number building in Dewey Decimal Classification, Universal Decimal Classification & Colon Classification / 
R. L. Sehgal. 
 - New Delhi :  Ess Ess publications,  1993 
 - vii, 260 p. :  22 cm. 
<br/><br/><label>ISBN: </label>8170001560 (hbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Classification