Fadli, M. R.; Sulistiyowati, W. . Optimization of Pipe Production Scheduling in Line 18 Using First Come First Serve (Fcfs), Earlier Due Date (Edd), Short Process Time (Spt) Methods (Case Study: Pt Wtur): Optimalisasi Penjadwalan Produksi Pipa Di Line 18 Dengan Metode First Come First Serve (Fcfs), Earlier Due Date (Edd), Short Process Time (Spt) (Studi Kasus : Pt Wtur). prozima 2021, 3, 44-54.