TY  - BOOK
AU  - Trowell, Judith (editor)
TI  - Project to enrich school mathematics : level 1
SN  - 0873532805
AV  - QA 135.5 .P964 1990
U1  - TR 372.7  
PY  - 1990///
CY  - Virginia: 
PB  - National Council of Teachers of Mathematics, 
KW  - Mathematics--Study and teaching (Elementary)
N1  - Faculty
ER  -