Check out the stuff offered from member Zukertort (i.e. the author of the book)
The Colle-Zukertort
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Hi Larry, there are several places you can find discussions of the Colle-Zukertort.
I give my rather biased one here: http://www.zukertort.com/6.html
Has anyone read Zuke-"em by David Rudel? If so what do you think. What are the opening moves with the Colle-Zukeertort. All I know that it is good for white?
Larry