TY - GEN AU - Kyttälä, Minna AU - Lehto, Juhani E. TI - Some factors underlying mathematical performance KW - Psicologia educacional KW - 3500 - Psicologia Educacional UR - https://catalogo.ispa.pt/opac/biblioteca/localizacao_doc/r4.htm  UR - https://search.ebscohost.com ER -