A research on centrifugal pump

[Theorotical]

hay everyone
i have a research on centrifugal pump and specifically on the pump volute. this research is for fundamentals of manufacturing course, i need some help with finding the appropriate sources of information.
so does any one know a good book or a website that is not in the front page of google search?

thanks alot

[FredGarvin]

There are tons of pump handbooks out there. Any engineering library will have something. I would recommend the Pump Handbook by Krassik.

You can also check out web sites of manufacturers like Gould.