TY  - BOOK
AU  - Freed، Kira
AU  - Funk، Tara
TI  - Discover Polygons
T2  - Math Explorers
SN  - 9781410893901
U1  - 500 21
PY  - 2009///
CY  - Pleham, New York
PB  - Benchmark Education Co
KW  - Science
N1  - Science
ER  -