TY  - BOOK
AU  - Johnston-Wilder,Sue
AU  - Mason,John
TI  - Developing thinking in geometry
SN  - 1-4129-1168-0
U1  - 516 C DEV 22
PY  - 2005///
CY  - London, Thousand Oaks, CA
PB  - Open University in association with Paul Chapman Pub.,
N1  - Includes bibliographical references (p. [258]-260) and index
ER  -