000 00318nam a2200121Ia 4500
008 190709s9999 xx 000 0 und d
082 _a370.78 T98
100 _aTravers, Robert M W
245 0 _aIntroduction to educational research
260 _aNew York
_bMacmillan Company
_c1963
300 _axviii, 466
942 _cBK
999 _c1131
_d1131