LEAD: After years of detective work, the Dutch Government has for the first time proved the authenticity of Anne Frank's diary down to the last detail. An authoritative edition of the book, which has moved millions of readers around the world, will be published in the United States by Doubleday on Monday.
We know Anne Frank's diary is authentic. Literary and handwriting comparisons and forensic results on the diary show conclusively that she was the author.
LEAD: After years of detective work, the Dutch Government has for the first time proved the authenticity of Anne Frank's diary down to the last detail. An authoritative edition of the book, which has moved millions of readers around the world, will be published in the United States by Doubleday on Monday.
We know Anne Frank's diary is authentic. Literary and handwriting comparisons and forensic results on the diary show conclusively that she was the author.
