000 00281nam a2200097Ia 4500
008 120224s9999 xx 000 0 und d
082 _a370.78
_bENG
100 _aEngelhart, Max D.
245 _aMethods of educational research
260 _bRand McNally & Company
_aChicago
_c1972
999 _c140474
_d140474