Amirah, A., Suharto, T. ., Yetti, E. ., Sari, A. ., & Mayridian, R. . (2021). The Influence of Covid-19 Preparedness Through Health Care Implementation on Ship Crew. Media Kesehatan Masyarakat Indonesia, 17(4), 116-123. https://doi.org/10.30597/mkmi.v17i4.13167