Hart, William L <br/><br/>
Plane trigonometry 

 - Boston  Health & Co  1933 
 - v,124p.:ill. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>MATHEMATICS--HANDBOOKS, MANUALS, ETC<br/>PLANE TRIGONOMETRY
<br/><br/><label>LC Class. No.: </label>QA 533 Har