000 00315nam a2200133Ia 4500
008 161118s2016 xx 000 0 und d
082 _a370.78 A4E2
100 _aAggarwal, J.C.
245 0 _aEducational Resarch
250 _a3rd.
260 _aNew Delhi
_bARya Book Depot
_c1975
300 _a298p.
942 _2ddc
999 _c11869
_d11869