Author,Title,Edition,Publisher,Year,Series,Number,ISBN,ISSN,URL
Great Britain. Dept. of Health and Social Security,National superannuation : terms for partial contracting out of the national superannuation scheme,,Hre Majesty's Stationery Office,1969,Cmnd,,0101419503,,https://cir.nii.ac.jp/crid/1130282270066644992