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 "Haggard, Thomas R.","Compulsory unionism, the NLRB, and the courts : a legal analysis of union security agreements",,"Industrial Research Unit, Wharton School, University of Pennsylvania",1977,Labor relations and public policy series,,0895460025,,https://cir.nii.ac.jp/crid/1130000794132494592