Two new pages from Anne Frank's diary have been published, containing a handful of dirty jokes and her thoughts on sex.
The hidden pages had been covered with gummed brown paper - apparently to hide her risqué writing from her family.
The entries were written on 28 September 1942, not long after the 13-year-old Anne went into hiding.
"Anne Frank writes about sexuality in a disarming way," said Ronald Leopold of the Anne Frank House museum in Amsterdam.
Writing about the decision to publish pages that Anne clearly wanted to keep hidden, the museum said that her diary - a Unesco-registered world heritage document - held significant academic interest.
But it also said that the pages "do not alter our image of Anne".
Anne Frank died of disease in a Nazi death camp in 1945, the year the war ended. »