Frendy Laurenza, Heri Sujatmiko, & Dimas Aji Purnomo. (2025). THE ROLE OF PROJECT MANAGERS IN IMPROVING CONSTRUCTION PROJECT EFFICIENCY. International Journal of Social Science, Educational, Economics, Agriculture Research and Technology (IJSET), 4(8), 1255–1262. https://doi.org/10.54443/ijset.v4i8.812