00313nam a22001097a 450000500170000000800410001705000140005810000300007224500580010226000270016030000160018720260313113611.0260313b        |||||||| |||| 00| 0 eng d  aQA39.2.P8  aA.J Sherlock, E.M Roebuck  aPure mathematicscby Alan Sherlock, Elizabeth Roebock  aBritainbBristolc1979  a766p. bHbk