000 00294nam a2200121Ia 4500
008 230815s9999 xx 000 0 und d
082 _a150
_bMAN
100 _aMangal, S.K.
245 0 _aEssentials of educational technalogy
260 _aIndia
_b:India
_c2017
300 _a812p.
942 _cBOOK
999 _c16416
_d16416