Valens, Evans G. <br/><br/>
The Number of Things:    Pythagoras, Geometry, and Humming Strings 

 -  1st ed. 
 - New York   Dutton    1964 
 - 189 p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Analytic--Plane<br/> Geometry<br/> Geometry<br/> Plane<br/>Mathematics<br/>Pythagorean theorem
<br/><br/><label>LC Class. No.: </label>QA460.P8V27