Singh, Ashok Kumar. <br/><br/>
Pioneer research in extension education / 
Ashok Kumar Singh. 
 - 1st  ed. 
 - Jodhpur, India :  Scientific Publishers,  2008. 
 - vi, 354  p. 
<br/><br/><label>ISBN: </label>8172335267 : 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Distance education--India.