TY  - GEN
AU  - Valas, Harald
AU  - Sovik, Nils
TI  - Variables affecting students intrinsic motivation for school mathematics
KW  - Psicologia e Educacao
KW  - 3500 - Psicologia Educacional
UR  - https://catalogo.ispa.pt/opac/biblioteca/localizacao_doc/r4.htm
ER  -