Practical conic sections :
Downs, J.W.
Practical conic sections : The geometric properties ellipses, parabolas and hyperbolas / by J.W. Downs. - Mineola, N.Y. : Dover, 2003. - XII, 100 p. : fig. ; 23 cm.
0-486-42876-1
Conic sections
Practical conic sections : The geometric properties ellipses, parabolas and hyperbolas / by J.W. Downs. - Mineola, N.Y. : Dover, 2003. - XII, 100 p. : fig. ; 23 cm.
0-486-42876-1
Conic sections