Frost, Percival,  1817-1898 <br/><br/>
An elementary treatise on curve tracing / 
by Percival Frost 
 - 4th ed. 
 - London :  Macmillan,  1926 
 - 210 p. :  ill. ;  23 cm. 
<br/><br/> Includes index 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Graphic methods<br/>Curves, Plane