TY  - GEN
AU  - Lens, Willy
AU  - Decruyenaere, Marleen
TI  - Motivation and de-motivation in secondary education
KW  - Psicologia e Educacao
KW  - 3500 - Psicologia Educacional
UR  - https://catalogo.ispa.pt/opac/biblioteca/localizacao_doc/r4.htm
ER  -