Jai-Woon Moon Kyeong-Yong Lee Ki-Hyun Kim Leanne Roberts Malia Burrows S.H. Park Jennifer Dowling Youn-ji Choi S.E. Zielinski Sang-Bum Chi Laura Benninger Hyun-Sub Kim Cheong-Kee Park James R. Hein 1998 application/pdf 10.3133/ofr98375 en U.S. Dept. of the Interior, U.S. Geological Survey, Composition of Co-rich ferromanganese crusts and substrate rocks from the Marshall Islands, cruise KODOS 97-4 reports