The dataset contains all the data produced running the research software for the study:"Open Science for Social Science and Humanities: Open Access availability and distribution across disciplines and Countries in OpenCitations Meta" These include: - SSH_Publications_in_OC_Meta_and_Open_Access_status.csv: containing information about OpenCitations Meta coverage of ERIH PLUS Journals as well as their Open Access availability. - SSH_Publications_by_Discipline.csv: containing information about number of publications per discipline ( in addition, number of journals per discipline are also included). - SSH_Publications_and_Journals_by_Country: containing information about number of publications and journals per country. - result_disciplines.json: the dictionary containing all disciplines as key and a list of related ERIH PLUS venue identifiers as value. - result_countries.json: the dictionary containing all countries as key and a list of related ERIH PLUS venue identifiers as value. - Each publication venue is associated with its identifier [ISSN]. Items included in OpenCitations Meta and/or Erih-PLUS are also identified by their internal IDs [OC_omid] and/or [EP_id]. [Publications_in_venue] refers to the numbers of publications in each venue, while [Open_access] expresses whether the venue's Open Access status is True or Unknown. - Each discipline is associated with a label [Discipline] and the number of journals/publications referring to it: [Journal_count] and [Publication_count]. - Each country of publication is associated with its name [Country] and the number of journals/publications published ther: [Journal_count] and [Publication_count].