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John Jr. Yes, the book has been published under different English-language titles in the U.S. and the U.K. If This Is a Woman was the original title, to judge from the author's entry at her agent's website. A familiar though less substantial example is Harry Potter and the Philosopher's Stone, whose American publishers apparently feared that no one in the States knew what a philosopher's stone was. Titles are tweaked in other genres as well. A play by British playwright Alan Bennett called The Madness of George III became The Madness of King George as a film, presumably so that former colonials here in the U.S. would better grasp the subject. Other examples, along with a bit of useful commentary, are here.
Bob H I reviewed this in advanced-reading copy under the title, Ravensbruck: Life and Death in Hitler's Concentration Camp for Women. Same author, so I doubt if she wrote two books on the same subject.