Good morning. Does anyone know a good site for finding precedents w/ very specific attributes?

For instance, I'm looking for high-rise mixed use towers (specifically, Hotel + Residential + Office), around 170 meters, including typical floor plans and (most importantly) core layouts.

I've had a bit of luck with http://www.skyscrapercity.com/, but the threads there tend to be mostly sexy renderings & construction photos, with very few plans or sections.

any ideas? If you know any good books, that may be helpful - but only if my office has them in the library....

thanks