00453nam a22001692  4500001001100000005001700011008004100028020001700069040001500086100002900101245005200130250001300182260003300195300001200228650004000240852000300280000002365220151217154504.0130313s         xx           000 0 eng d  a8189005801 :  aKABUcKABU1 aSingh, C. P.@000018324610aAdvanced educational technology /cC. P. Singh.  a1st  ed.  aNew Delhi :bSaurabh,c2011.  a254  p. 0aEducational technology.@00001535501