TY  - BOOK
ED  - School Mathematics Study Group
TI  - Mathematics for the elementary school: grade 4 
T2  - Student's text
U1  - 372.37 23
PY  - 1964///.
CY  - California : 
PB  - School Mathematics Study Group, 
KW  - Mathematics
KW  - Study and teaching (Elementary)
ER  -