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The timeline of all of her published works is such:
1.) Harry Potter and the Philosopher's Stone
2.) Harry Potter and the Chamber of Secrets
3.) Harry Potter and the Prisoner of Azkaban
4.) Harry Potter and the Goblet of Fire
5 and 6.) Quidditch Through the Ages and Fantastic Beasts and Where to Find Them
7.) Harry Potter and the Order of the Phoenix
8.) Harry Potter and the Half-Blood Prince
9.) Harry Potter and the Deathly Hallows
10.) The Taled of Beedle the Bard
The answer then, to your question is Harry Potter and the Half-Blood Prince.
What else can I help you with?
Who published JK Rowlings book?
JK Rowling's books were published by Bloomsbury in the UK, Scholastic in the US and Raincoast in Canada.
What was JK Rowlings best book ever written?
I'm pretty sure it was Harry Potter and the Deathly Hallows
What is jk rowlings favorite thing to do?
reading books
Did JK Rowlings children ever think of writing?
no she was a singer
Who is jk rowlings favorite author?
Jane Austen, I think
Why has JK Rowlings included a lot of French and English people in her book if she was originally from Scotland?
Because, she WANTED to. You got a problem with it? Uh, Uh!
What color are jk rowlings eyes?
She has blue eyes
When is Jessica Rowling's birthday?
27th July 1993 ;-) she is jk rowlings oldest child
What does the initiial k in Harry Potter author jk Rowlings name?
Joann Kathleen Rowling
Did JK rowlings sister encourage her to write Harry Potter books?
yes she did a little bit
Who was the Headmaster of Hogwarts through a large part of JK Rowlings Harry Potter series?
Albus Dumbledore
What is jk rowlings favorite place on earth?
J.K. Rowling has not publicly disclosed her favorite place on Earth.
