Ayres, Frank . <br/><br/>
Theory and Problems of Plane and Spherical Trigonometry /  Textual Documents 
Frank Ayres. 
 - 1st ed. / 
 - New York :  Schaum Publishers Co. ,  1954. 
 - 207p. ;  22cm. 
<br/><br/>Index 
<br/><br/><label>Subjects--Index Terms: </label>Trigonometry Plane Trigonometry Spherical Trigonometry G-Mathematics 
<br/><br/><label>Dewey Class. No.: </label>514.6  / Ay 74 T