000 00299nam a2200109Ia 4500
008 211215s9999 xx 000 0 und d
040 _cJayakar Knowledge Resource Centre
100 _aBest, John W
245 0 _aResearch in education
260 _bPrentice Hall of India
_aNew Delhi
_c1963
942 _c1
999 _c85673
_d85673