TY  - BOOK
AU  - Krulik,Stephen
AU  - Kaufman,Irwin
TI  - How to use the overhead projector in mathematics education
AV  - PAM QA11.K79 
PY  - 1966///
CY  - Washington
PB  - National Council of Teachers of Mathematics
KW  - Mathematics
KW  - Study and teaching
KW  - Audio visual aids
KW  - Overhead projection
ER  -