In need of some more brain food!

[goblin-queen]

Afternoon all, I'm gonna keep it short and sweet because for some reason I am ridiculously tired. ^^;

I'm looking for books/resources on the following:

. Finnish Magic/Paganism

. Celtic Magic/Paganism

. Slavic Magic/Paganism

My system is in dire need of some structure. So I'm hoping that I can turn up some similarities between the three paths and so give myself a more sturdy foundation on which to build my practice. 

Many thanks to anyone who can help!