TY  - BOOK
AU  - Greenes,Carole E.
AU  - Findell,Carol R.
TI  - Groundworks: algebraic thinking, grade 1, [teacher book] 
SN  - 0762212055 ([teacher book])
PY  - 1999///
CY  - Chicago (Ill.)
PB  - Creative Publications
KW  - Matemáticas
KW  - Primaria
N1  - Bibliografia; Conté: Groundworks : algebraic thinking, grade 1, [teacher book] ; Algebra : problems from groundworks, students workbook ; Algebra : problems from groundworks, grade 1, answer key
UR  - https://cercabib.ub.edu/iii/encore/record/C__Rb1545305
ER  -