000 00283nam a2200109Ia 4500
008 220510s1973 xx 000 0 und d
041 _aeng
082 _a370
_bCOL
100 _aBall,Colin,
_9778649
245 _aEducation for a change
260 _aAustralia:
_bPenguin Education,
_c1973
999 _c528859
_d528859