Title: Zui e di "731""100"
Subjects: Sino-Japanese War, 1937-1945, Japan. Rikugun. Kantōgun. Butai, Dai 731, Japan. Rikugun. Kantōgun, Biological warfare, Japan. Rikugun. Kantōgun. Butai, Dai 100, Sources, Japan, Regimental histories, History
Places: Japan