00363cam a2200121ua 4500041001000000082001800010100002200028245011900050250001200169260004300181300001200224504000500236  aengh  a516.3bSMI/CO  aSmith, Charles  .  aElementary treatise on conii sections by the methods of co-ordinate geometry / cCharles Smith.hTextual Documents  a1 / b.  aLondon : bMcMillon & Co Ltd , c1962.  a449 ; .  a