TY  - BOOK
AU  - Borgersen, Hans Erik
TI  - Open ended problem solving in geometry 1994
SN  - 7271173006
U1  - 516 BOR 
PY  - 1995///
CY  - Kristiansand
PB  - Hogskolen
KW  - Geometry
N1  - Includes bibliographies
ER  -