Google Books is sweet!

You can add books to your library and then search -- this yields a cross-reference throughout the work. This means even where there is missing page content -- say in a 'limited previews it still cross-references all content! For found items -- they appear as a series of 'boxed comments'(if you don't see these click on 'contents' link - then 'order by page'). Click on any of these and your taken to that page--then the other cross-references (including omitted material) appear as little pale-blue 'markers' on right margin. Scroll-these and float-over the mark -- the context of your search text appears in a balloon above the mark. For pages for which there is content -click--and you are taken there!



Click the 'link' on that googlebooks search -- and you can share with others.

Try this one on 'will' within the 'Confessions' of St. Augustine:



http://preview.tinyurl.com/l43f9n