Mishra,  Girish  <br/><br/>
Ecoc Systems  / 
by Girish Mishra 
 - Delhi :  Pragati Pub,   1986 
 - v, 344 p. :   22 cm. 
<br/><br/><label>ISBN: </label>8176297801 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Economics
<br/><br/><label>Universal Decimal Class. No.: </label>333.7