Most bookstores and libraries use Global Books in Print for their book searching needs but you need to be a subscriber to get access. Check your library's website to see if you can online access through them.
Open Library (which is currently in beta) aspires to be the source you are looking for: "one web page for every book". posted by copystar at 5:30 AM on July 3 [3 favorites]
I switched to GoodReads from LibraryThing as well, so I recommend GoodReads over it. posted by Nattie at 5:43 AM on July 3
posted by Presentnapper at 4:25 AM on July 3 [2 favorites]