Underwood , Ralph S.. <br/><br/>
Living Mathematics /  Textual Documents 
Ralph S.Underwood & Fred W.Sparks. 
 - 1st ed. / 
 - New York :  McGraw - Hill book company ,  1949. 
 - 373p. :  ill ;  22cm . 
<br/><br/><label>Subjects--Index Terms: </label>Mathematics Living Mathematics G-Mathematics 
<br/><br/><label>Dewey Class. No.: </label>510.2  / Un 2 L