000 00308nam a2200121Ia 4500
100 _aShaw, Peter & De Vet,Therese
020 _a0 - 04 - 371075 -1
942 _cBK
245 _aUsing blackboard drawing No.5
260 _aGeorge Allen & Unwin, London
_c1980
082 _a428.24078 Sha/Dev
300 _a128,pp
999 _c11219
_d11219