000 00318nam a2200133Ia 4500
008 190601s9999 xx 000 0 und d
082 _a370
_bRUS
100 _aRusk, Robert R.
245 0 _aExperimental education
260 _aLondon
_bLongmans
_c1921
300 _aviii, 346 p.
650 _aEducation
942 _cR
999 _c119427
_d119426