Prasetyo, A.B. and Setiono, B.A. 2020. The Effect of Covid-19 on Productivity of Loading and Unloading at BUP PT. DABN Probolinggo Branch. JURNAL APLIKASI PELAYARAN DAN KEPELABUHANAN. 11, 1 (Sep. 2020), 75–85. DOI:https://doi.org/10.30649/japk.v11i1.63.