00280nam a22000977a 450000500170000000800410001702000150005804000080007324500440008126000570012520200901105930.0200901b           ||||| |||| 00| 0 eng d  a0435506005  cCML  aTeaching Mathematics.cMarjoram, D.T.E.  aGreat BritainbHeinemann Educational Books Ltdc1974