00373nam a2200109Ia 4500008004100000082001800041100001900059245012700078250000800205260003000213300002000243260320b        |||||||| |||| 00| 0 eng d  a516bSa172.TC  aSalmon, George  aA treatise on conic sections containing in account of some of the most important modern algebraic and geometric methodsb/  a6th  aNew York:bChelsea,c1954  axv, 399p. Index