San Luis, Benedicto T. Analytic geometry in 2- and- 3 spaces / Benedicto T. San Luis. - Manila, Philippines: Grandbooks Publishing Inc., c2016. - 149 pages : illustrations; 23cm. ISBN: 971-725-065-0 Subjects--Topical Terms: 1. Geometry, Analytic Dewey Class. No.: Fil. 515 S194a 2016