[1]
“Distribution of Coral Reefs Stone at the Reef Flat of South Coast Putus-Putus Island East Ratatotok, Ratatotok District Southeast Minahasa Regency”, JIP, vol. 4, no. 1, pp. 19–30, Sep. 2016, doi: 10.35800/jip.4.1.2016.13229.