TY  - BOOK
AU  - National  council of teachers of mathematics
TI  - Principles and standards for school mathematics
SN  - 0873534808
AV  - QA 13.P735 2000 
PY  - 2000///
CY  - U.S.A
PB  - Reston
KW  - Mathematics-Study and teaching -United States-Standards
ER  -