TY  - BOOK
AU  - Posamentier , Alfred S. ,
AU  - Lehmann, Ingmar,
TI  - Secrets of triangles: a mathematical journey
SN  - 9781616145873
U1  - 516.154 POS 
PY  - 2013///
CY  - New York
PB  - Prometheus Books
KW  - Geometry
KW  - Trigonometry
N1  - Includes bibliographical references  and index
ER  -