| • | OPAC SBV
Catalogo del Servizio Bibliotecario Valdostano |
| • | DOAJ
Directory of Open Access Journals. (Business and Economics, Education, Psychology, Sociology, Languages and Literatures, etc.) |
| • | OAIster
Collection of freely available, difficult-to-access, academically-oriented digital resources.
(Search Engine on Academic Open Archives). |
| • | OPAC SBN
Catalogo del Servizio Bibliotecario Nazionale (a cura dell’Istituto Centrale del Catalogo Unico) |