000 00323nam a2200133Ia 4500
008 240227s9999 xx 000 0 und d
041 _aEnglish
245 0 _aMulti Grade Teaching
260 _bNIE,
_c1991
300 _a40p;
_bill.;
_c28cm
650 _aProfessional Education
658 _aDistance Education
942 _cMD
999 _c97752
_d97752