Hobson , E.W.. <br/><br/>
An Elementary Treatise on Plane Trigonometry /  Textual Documents 
E.W.Hobson & C.M.Jessop. 
 - 1st ed. / 
 - Cambridge :  At The University Press ,  1913. 
 - 324p. ;  19cm. 
<br/><br/><label>Subjects--Index Terms: </label>Trigonometry Plane Trigonometry G-Mathematics 
<br/><br/><label>Dewey Class. No.: </label>514.5  / H 653 El