TY  - GEN
AU  - Wiersema, Bert
AU  - Van Oudenhoven, Jan
TI  - Effects of cooperation on spelling achievement at three age levels
KW  - Psicologia e Educacao
KW  - 3500 - Psicologia Educacional
UR  - https://catalogo.ispa.pt/opac/biblioteca/localizacao_doc/r4.htm
ER  -