TY  - BOOK
TI  - The challenge of the unknown:  teaching guide to accompany the film series/ 
SN  - 0393955362
AV  - QA 63 .C43 1986 
PY  - 1986///
CY  - New York : 
PB  - Norton, 
KW  - Mathematics
KW  - Study and teaching
N1  - Includes bibliography and index
ER  -