Title: "Gassakusha Jiken" kankei shiryō
Subjects: Internal security, Sources, History, Employees, Political activity, Minami Manshū Tetsudō Kabushiki Kaisha. Chōsabu, Minami Manshū Tetsudō Kabushiki Kaisha, Kōnō Gassakusha
Places: China, Manchuria
Time periods: 20th century