Singh, Y K. <br/><br/>
Encyclopaedia of educational technology:   Teaching-learning  / 
Y K Singh; T K Sharma; Brijesh Upadhya. 
 - New Delhi :   A P H Pub. Corp.,  2008 
 - v,332 p. (v-1):  ill.   23 cm. 
<br/><br/><label>ISBN: </label>9788131303559 (set) 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Educational technology.  ;   Teaching -- Aids and devices. 
<br/><br/><label>Universal Decimal Class. No.: </label>371.33