Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Ishikawa K. and Tokuda S. and Mizunaga T. and Sakagami T.,Application of corn penetoration test for large depth for 2nd-phase construction project.,Proceedings of the Japan National Conference on Geotechnical Engineering,,The Japanese Geotechnical Society,2002,JGS37,0,131-132,https://cir.nii.ac.jp/crid/1390001205595363200,https://doi.org/10.11512/jiban.jgs37.0.131.0