Author,Title,Edition,Publisher,Year,Series,Number,ISBN,ISSN,URL National Research Council (U.S.). Highway Research B,Soil drainage : 1 report. Soil freezing; 2 reports,,"Highway Research Board, Division of Engineering and Industrial Research, National Academy of Sciences-National",1965,Highway research record,,,,https://cir.nii.ac.jp/crid/1130282271432528000