TY  - BOOK
AU  - Valens,Evans G.
TI  - The number of things: pythagoras, geometry, and humming strings
AV  - QA460.P8V27 
PY  - 1964///
CY  - New York
PB  - Dutton
KW  - Analytic
KW  - Plane
KW  - Geometry
KW  - Mathematics
KW  - Pythagorean theorem
ER  -