TY  - GEN
AU  - Diener, Ed
AU  - Diener, Carol
AU  - Biswas-Diener, Robert
TI  - Open-source for educational materials making textbooks cheaper and better
KW  - Psicologia Educacional
KW  - 3500 - Psicologia Educacional
UR  - https://catalogo.ispa.pt/opac/biblioteca/localizacao_doc/e2.htm
ER  -