Forder[, Henry George . <br/><br/>
The Calculus of Extension /  Textual Documents 
Henry George Forder. 
 - 1st ed. / 
 - Cambridge :  Cambridge University Press ,  1941. 
 - 488p. :  ill ;  22cm  24cm . 
<br/><br/><label>Subjects--Index Terms: </label>Calculus G-Mathematics 
<br/><br/><label>Dewey Class. No.: </label>517  / F 758 C