https://library.universitaspertamina.ac.id//xmlui/handle/123456789/99 Collection of Economics Lecturers' Paper (EC) Sat, 11 Apr 2026 18:52:25 GMT 2026-04-11T18:52:25Z https://library.universitaspertamina.ac.id//xmlui/handle/123456789/11685 coba Mon, 13 Feb 2023 00:00:00 GMT https://library.universitaspertamina.ac.id//xmlui/handle/123456789/11685 2023-02-13T00:00:00Z