000 00338nam a2200109Ia 4500
005 20251007104427.0
008 251006s9999 xx 000 0 und d
100 _akrebs,alfred h.
245 0 _afor more effective teaching,a problem solving approach for teachers of vocational agriculture krebs,alfred h.
260 _a1st ed.
942 _cBOK
999 _c6989
_d6989