The trisectors 
Underwood Dudley 
 - wasington  [publisher not identified]  1996 
 - xvi,184p 
<br/><br/><label>ISBN: </label>9780883855140 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics, 2.Trisection of angle
<br/><br/><label>Dewey Class. No.: </label>516.204 DUD