Start of Library Service, 2nd Semester A.Y. 2019-2020 6 Jan 202025 Sep 2023 by Library UP Diliman, posted in Advisories View this post on Instagram Start of Library Service for Second Semester 2020. 😊 A post shared by The University Library Diliman (@updlibrary) on Jan 5, 2020 at 5:31pm PST