Nguyen MH, Vu HD, Thanh TTM, Pham SA. Machinery Usage and Productivity in Manufacturing: Firm-Level Matter in Developing Countries. Emerg Sci J [Internet]. 2025 Aug. 1 [cited 2025 Sep. 12];9(4):2026-44. Available from: https://www.ijournalse.org/index.php/ESJ/article/view/3167