000 00555nam a2200181Ia 4500
005 20250508160815.0
008 008 250505s9999 xx 000 0 eng d
037 _aTextual
040 _aFEDL
_beng
_cFEDL
041 _aeng
_2eng
084 _a153.1, WAL
_qFEDL
100 _aWallace J. G.
_9769425
245 0 _aStages and transition in concpetual development : An experimental study
260 _aEngland, UK
_bNational Foundation for Education Research
300 _a247p.
942 _cTEXL
_h153.1, WAL
999 _c1366731
_d1366731