Takashi Danjo, and Satoru Kawasaki. “A STUDY OF THE FORMATION MECHANISM OF BEACHROCK IN OKINAWA, JAPAN: TOWARD MAKING ARTIFICIAL ROCK”. GEOMATE Journal 5, no. 9 (September 30, 2013): 634–639. Accessed April 19, 2024. https://geomatejournal.com/geomate/article/view/2026.