1. Kokka dokusen shihonshugi to shakai seisaku Author: Aizawa, Yoichi, 1933- Format: Book Language: Japanese Published: 1974
2. Nihon shakai hoken no seiritsu / Aizawa Yoichi日本社会保険の成立 / 相澤與一 Author: Aizawa, Yoichi, 1933- and 相澤與一, 1933- Format: Book Language: Japanese Published: 2003