000 00361nam a2200121Ia 4500
005 20251007104545.0
008 251006s9999 xx 000 0 und d
100 _acrawford,d. h.
245 4 _athe five mathematics projects;an experiment in individualized learning crawford,d. h.
260 _a1st.ed. | London Oxford University
260 _c1975
942 _cBOK
999 _c9832
_d9832