Mansfield, Ralph <br/><br/>
Trigonometry with applications 
by Ralph Mansfield 
 - Belmont, Ca.  Wadsworth Publishing Co.  1972 
 - xxiii, 529 p. : ill. ; 25 cm. 
<br/><br/><label>ISBN: </label>0534001432 
<br/><br/><label>LCCN: </label>79-150121 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Trigonometry