McFadden, Myra. <br/><br/>
Modern trigonometry :  a program for self-instruction / 
Program editors : J. William Moore [and] Wendell I. Smith. 
 - New York :  McGraw-Hill,  [1965] 
<br/><br/>Bibliography: p. x. 
<br/><br/><label>LCCN: </label>64066025 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Trigonometry -- Programmed instruction.--Trigonometry -- Programmed instruction.
<br/><br/><label>LC Class. No.: </label>QA531  / .M26 
<br/><br/><label>Dewey Class. No.: </label>514.077