. . "Case studies"@en . "Case studies" . . . . . . "A case study of balloting regulation; the Boston and Maine recapitalizes, 1948-1953"@en . . . "A case study of balloting regulation the Boston and Maine recapitalizes, 1948-1953"@en . "A case study of balloting regulation the Boston and Maine recapitalizes, 1948-1953" . . . . . . . . . "A Case Study of Balloting Regulation. The Boston and Maine recapitalizes, 1948-1953"@en .