▁Gla z eb ro ok . ▁ ▁; ▁translated ▁from ▁Russian ▁by ▁V . ▁V . ▁Gold berg ▁with ▁a ▁for ew ord ▁by ▁S . ▁S . ▁Ch ern . ▁▁ ▁Volume ▁I ▁( 1 8 8 7 ), ▁Volume ▁II ▁( 1 9 1 5 ) ▁[ 1 8 8 9 ], ▁Volume ▁III ▁( 1 8 9 4 ), ▁Volume ▁IV ▁( 1 8 9 6 ). ▁▁ ▁Full ▁ 1 9 0 9 ▁text ▁( now ▁out ▁of ▁copy right ) ▁ ▁. ▁. ▁ ▁translated ▁by ▁A . M . ▁Hil te beit el ▁and ▁J . C . ▁More head ; ▁" Dis quisition es ▁gener ales ▁circa ▁superfic ies ▁cur vas ", ▁Comment ation es ▁Soci et atis ▁Reg iae ▁Scient iar um ▁Got ting esis ▁Rec ent ior es ▁Vol . ▁VI ▁( 1 8 2 7 ), ▁pp .   9 9 – 1 4 6 . ▁. ▁. ▁▁▁▁ ▁, ▁▁ ▁Ian ▁R . ▁Por te ous ▁( 2 0 0 1 ) ▁Ge ometric ▁D iffer enti ation : ▁for ▁the ▁intelligence ▁of ▁curves ▁and ▁surfaces , ▁Cambridge ▁University ▁Press ▁. ▁▁ ▁Full ▁text ▁of ▁book ▁▁▁▁ ▁n l : O pper v lak ▁( me et k unde ) <0x0A> </s> ▁k ows ari ▁or ▁Kos ari ▁( ; ▁) ▁may ▁refer ▁to : ▁ ▁Bar an ▁Kos ari ▁ ▁Maz ra eh - ye ▁K ows ari ▁See ▁also : ▁K ows ar ▁( disambiguation ) <0x0A> </s> ▁is ▁a