00501nam a22001692  4500001001100000005001700011008004100028020001700069040001600086100003600102245006600138250001300204260005200217300001600269650004300285852000300328000002060220151217152218.0110927s         xx           000 0 eng d  a8172335267 :  aKABUlcKABU1 aSingh, Ashok Kumar.@000018097510aPioneer research in extension education /cAshok Kumar Singh.  a1st  ed.  aJodhpur, India :bScientific Publishers,c2008.  avi, 354  p. 0aDistance educationzIndia.@00001586291