@article{oai:repository.dl.itc.u-tokyo.ac.jp:00038720, author = {Ohuta, Suguru}, issue = {60}, journal = {Preliminary report of the Hakuhō Maru cruise}, month = {}, note = {航海番号: KH-91-6 ; 航海日程: November 1 - November 25, 1991}, pages = {1--97}, title = {Japan trench,Northwestern Pacific}, volume = {1991}, year = {1993} }