Author,Title,Edition,Publisher,Year,Series,Number,ISBN,ISSN,URL "Bear, Jacob and ZaslavskiÄ­, David Iosifovich and Irmay, S.",Physical principles of water percolation and seepage,,Unesco,1968,Arid zone research = Recherches sur la zone aride,,,,https://cir.nii.ac.jp/crid/1130000793978199936