TY  - BOOK
AU  - Losh,Rosamond
AU  - Weeks,Ruth Mary
TI  - Primary number projects
U1  - 511.07 
PY  - 1923///
CY  - Boston
PB  - Houghton Mifflin
KW  - Arithmetic
KW  - Study and teaching
KW  - Project method in teaching
ER  -