Borchardt, W.G. . <br/><br/>
A New Trigonometry for Schools /  Textual Documents 
W.G. Borchardt,A.D. Perrott. 
 - 8th rev ed / 
 - London :  G.Bell and Sons ,  1912. 
 - xi,400p. ;  20cm. 
<br/><br/><label>ISBN: </label> HB 
<br/><br/><label>Subjects--Index Terms: </label>Mathematics T/G-Mathematics 
<br/><br/><label>Dewey Class. No.: </label>514  / B 644 N