TY  - BOOK
AU  - Hart,Kathleen M.
AU  - Johnson,David C.
TI  - Children's mathematical frameworks 8-13: a study of classroom teaching 
SN  - 0-7005-1211-X
U1  - 372.70941 HAR 20
PY  - 1989///
CY  - Windsor, Berkshire, England
PB  - NFER-NELSON
N1  - Includes bibliographical references (p. [225]-226)
ER  -