TY  - BOOK
AU  - Bell,Max
AU  - Fuson,Karen C.
AU  - Lesh,Richard A.
TI  - Algebraic and arithmetic structures: a concrete approach for elementary school teachers 
SN  - 0029022703
AV  - QA135.5 .B43
U1  - 372.7 
PY  - 1976///
CY  - New York
PB  - Free Press
KW  - Mathematics
KW  - Study and teaching (Elementary)
N1  - Includes index; Bibliography: p. 662-668
ER  -