city specialization tips?

[Dr. Rosenrosen]

I am looking for suggestions on what national and world wonders to build in order to specialize my cities. I thought I saw a nice outline, but can't find it. The different city types that I can think of are military, science, production, GP, and culture (?). The big problem, of course, is the 2 national wonder limitation per city. If anyone can post a list of which improvements/wonder are most beneficial to which city types, I would be really happy!

 

[Dr. Rosenrosen]

The thread that I had seen earlier with city specialization tips is

http://apolyton.net/forums/showthread.php?s=&threadid=143432

Full credit to remconius and thanks for the tips!