Lock, J. B. <br/><br/>
Trigonometry for beginners as far as the solution of triangles / 
by J. B. Lock 
 - London :  Macmillan,  1890 
 - 148, 52 p. ;  17 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Trigonometry
<br/><br/><label>Dewey Class. No.: </label>514