TY  - GEN
AU  - Nesher, Pearla
TI  - Levels of description in the analysis of addition and subtraction word problems
KW  - Psicologia Educacional
KW  - 3500 - Psicologia Educacional
UR  - https://catalogo.ispa.pt/opac/biblioteca/localizacao_doc/e2.htm
ER  -