Singh, Y.K. <br/><br/>
Educational technology:  management and planning/ 
Y.K. Singh, T.K. Sharma and Brijesh Upadhya 
 - New Delhi:  A.P.H Publishing Corporation,  c2008. 
 - v, 271 pages :  illustrations ;  22 cm. 
<br/><br/>Includes bibliographical references.