SOMMERVILLE, D.M.Y.
Analytical conics - 3rd ed., rev. - London G Bell pub. 1951 - viii, 310 p.
117386
Analytical conics
516.15 / SOM
Analytical conics - 3rd ed., rev. - London G Bell pub. 1951 - viii, 310 p.
117386
Analytical conics
516.15 / SOM