Google has added Book Search to its Search Options.

In case you havent been closely following everything Google has launched this year and that is quite a bit, these options are presented to searchers at the top of the results page when they perform a search. I think the feature can be quite useful, but I often wonder how many people actually think to use it, or even know that its there. The feature was announced back in May at Googles Searchology event, along with a number of other things. In some ways, it is similar though certainly not the same to Bings interface.