TY  - BOOK
AU  - Fredenthal, Hans
TI  - Mathematics as an educational task
SN  - 90-277-0235-7
U1  - 510.7 21st
PY  - 1973///
CY  - Holland
PB  - D Reidel
KW  - Mathematic; Probabilities; Mathematical statistics; Geometry
ER  -