DM NO. 1642, S. 2024. OFFICER-IN-CHARGE (OIC) OF SCIENCE ON DECEMBER 18-20, 2024 Posted on December 17, 2024 by Leave a comment DM NO. 1642, S. 2024. OFFICER-IN-CHARGE (OIC) OF SCIENCE ON DECEMBER 18-20, 2024 Memorandum Numbered