TY  - BOOK
AU  - Baumgart,John K.
ED  - National Council of Teachers of English.
TI  - Historical topics for the mathematical classroom: thirty-first yearbook 
T2  - Yearbooks (National Council of Teachers of Mathematics)
PY  - 1969///
CY  - Washington
PB  - National Council of Teachers of Mathematics
KW  - Mathematics
KW  - History
ER  -