000 00256nam a2200109Ia 4500
008 240421s9999 xx 000 0 und d
100 _aAman, Amit Kumar
245 0 _aClassroom Dynamics
260 _aNew Delhi
_bA.P.H.
_c2014
300 _a83p.
942 _cBK
999 _c15595
_d15595