000 00309nam a2200121Ia 4500
008 160601s9999 xx 000 0 und d
100 _aLindgren, Henry Clay
_912625
245 _aEducational psychology in the class room
260 _aNew Jersey
260 _bJohn Wiley & Sons
260 _c1971
300 _a132
999 _c4039
_d4039