000 00324nam a2200121Ia 4500
001 84262
008 170722s9999 xx 000 0 und d
100 _aOlson, Willard C.
245 _aPsychological foundations of the curriculum /
260 _c1964.
490 _aUnseco Educational studies and documents,26
942 _cGEN
999 _c66247
_d66247