Am I going mad? Is it right that the parts and quantity of a book that you can access on Google Books changes over time? Last week I was looking at a book online and I am sure I was reading chapter 7 - looked at it today and it isn't available?

yeah, it does change, Sometimes I've been able to see the all important 'missing' page, just by opening it up on 2 computers at the same time.

That's good to know.
Often had it that exactly the page I needed was missing. ;)

Thanks