This book was published in 1945 by by The Princeton Press in New Jersey. The edition had no copyright notice, but was registered with the U.S. Copyright Office
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Consequently, the first edition should have had its copyright renewed in 1965 and the reprint edition in 1963. The U.S. copyright office renewal records do not show a renewal for these editions from 1961 to 1965. This book is therefore out of copyright in the U.S.A.
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