Viewing all nodes titles in a book at once

Hi,

Imagine a monthly publication as book with this outine, all published by the same user:

Foo 2007 (Book Parent)
- January
-- Article 1
-- Article 2
- February
-- Article 1
-- Article 2

I've already created a basic page view, added the fields 'Book Parent Title' and 'Node Title' and filtered according to published, time created (>31/12/06), time created (<1/1/08) and user ID. The trouble is, I get this:

Foo 2007
- January
-- Article 1
- January
-- Article 2

Foo 2007
- February
-- Article 1
- February
-- Article 2

Which is a bit of a mess. How can I create a View to neatly display all the titles in the book for the whole year without the repetition? I suspect the solution may have to do with Argument handling, but I'm happy to go there if necessary!

Thanks,

M.