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Books about Kawatsu:
Kanjiro Kawai: Catalogue of Kawatsu Collection by Kanjiro Kawai (1983)
Wiki information Kawatsu:
Kentaro Kawatsu was a Japanese swimmer who competed at the 1932 Summer Olympics. Kawatsu was a native of Hiroshima City, where his father was a physical education instructor at the predecessor of Hiroshima University. In 1930, while still in middle...
Saeko Kawatsu is an actress.