https://e-journal.yayasancec.or.id/index.php/corolla/gateway/plugin/AnnouncementFeedGatewayPlugin/atom International Journal of Education Research and Development: Announcements 2021-02-12T03:24:35+07:00 Open Journal Systems https://e-journal.yayasancec.or.id/index.php/corolla/announcement/view/1 Announcements 2021-02-12T03:24:35+07:00 International Journal of Education Research and Development 2021-02-12T03:24:35+07:00