Durell, Clement <br/><br/>
Concise geometrical conics / 
Durell, Clement 
 -  Macmillan & Co. Ltd., London,  1961 
 - p. ;  22 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geometry; Mathematics
<br/><br/><label>Dewey Class. No.: </label>516 DUR-C