“The Initial Process of Dam Construction Is Seen from a Topographical Perspective (Bench Mark Coordinates and Control Point Coordinates): Case Study of D.I. Bajayu Kab Serdang Bedagai ”. International Journal of Innovative Research in Computer Science & Technology 11, no. 2 (March 30, 2023): 34–37. Accessed November 24, 2024. https://acspublisher.com/journals/index.php/ijircst/article/view/10272.