Perry, John . <br/><br/>
Elementary Practical Mathematics /  Textual Documents 
John Perry. 
 - 1st ed. / 
 - New York :  Macmillan and co ,  1913. 
 - 335p. :  ill ;  22cm . 
<br/><br/>Index 
<br/><br/><label>Subjects--Index Terms: </label>Mathematics G-Mathematics 
<br/><br/><label>Dewey Class. No.: </label>511  / P 429 El