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Books about Yayori:
Biography - Matsui, Yayori (1934-2002): An article from: Contemporary Authors by Gale Reference Team (Dec 16, 2007)
Women's Asia by Matsui, Yayori published by Zed Books Paperback (Jan 1, 1990)
Broken Silence: Voices of Japanese Feminism [Paperback]  (Author) Aoki Yayoi, Ide Sachiko, Kanazumi Fumiko... (1997)
Wiki information Yayori:
Yayori Matsui was a Japanese journalist and women's rights activist. She is noted for her work to raise awareness for sex slaves in post-war Asia.