TY  - GEN
AU  - Beller, Michal
AU  - Gafni, Naomi
TI  - 1991 international assessment of educational progress in mathematics and sciences
KW  - Psicologia e Educacao
KW  - 3500 - Psicologia Educacional
UR  - https://catalogo.ispa.pt/opac/biblioteca/localizacao_doc/r4.htm
ER  -