著者名,書名,版表示,出版者名,出版年,シリーズ名,番号,ISBN,ISSN,URL "Newbery, David M. G.","Risk sharing, sharecropping and uncertain labor markets",,"Institute for Mathematical Studies in the Social Sciences, Stanford Univ.",1976,The economics series : technical report,,,,https://cir.nii.ac.jp/crid/1130000794160190592