Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Yokoyama Hisashi and Ueda Hiroshi,A Simple Corer Set inside an Ekman Grab to Sample Intact Sediments with the Overlying Water,BENTHOS RESEARCH,02894548,JAPANESE ASSOCIATION OF BENTHOLOGY,1997,52,2,119-122,https://cir.nii.ac.jp/crid/1390282680456963840,https://doi.org/10.5179/benthos1996.52.2_119