A Treatise on conic sections.
Salmon, George
A Treatise on conic sections. - 6th ed. - New-York Chelsea Publ. Co. [1878] - xv, 399 p. fig. 21 cm.
A Treatise on conic sections. - 6th ed. - New-York Chelsea Publ. Co. [1878] - xv, 399 p. fig. 21 cm.