Silverlight import references

If I have a silverlight project and silverlight class library.

In the class library I imported the开发者_JAVA百科 silverlighttoolkit.dll. The silerlight project imports this class library and also the silverlighttoolkit.dll. Will that make my xap file larger? How do I handle something like this? Should I use the toolkit dll through the class library?

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No, the XAP will only pull in the library once.