Kyoichi Okamoto, Kenji Hotta, Takeshi Toyama, and Hideki Kohno. “PURIFICATION SYSTEM OF OCEAN SLUDGE BY ACTIVATING MICROORGANISMS”. GEOMATE Journal 6, no. 11 (March 28, 2014): 791–795. Accessed December 14, 2024. https://geomatejournal.com/geomate/article/view/2947.