Analysis of Water Quality in Historical Shipwreck Sites to Support the Development of Marine Ecotourism in the Thousand IslandsAgustin Rustam, Ira Dillenia, Rainer A Troa, Eko Triarso, Ofri Johan, Nur Azmi Ratna Setyawidati, LPA Savitri CH Kusuma and Shinatria AdhityatamaE3S Web Conf., 324 (2021) 03001DOI: https://doi.org/10.1051/e3sconf/202132403001