“Assessing the Quality of Ship Crew Members in Sewage Pollution Prevention Practices on Marine Environmental Protection: A Case of Dar Es Salaam – Zanzibar Ropax Vessels”. Social Science and Humanities Journal, vol. 8, no. 10, Oct. 2024, pp. 5259-68, https://doi.org/10.18535/sshj.v8i10.1354.