Wusterbarth looks to have been in Pommern. The LDS has filmed many of the records from Prussia. If you go to their family search site, they have civil registrations from Wusterbarth. You need to find out what parish that would have been part of (which I know can be done, just not how) and look up the parish in the place finder at the LDS site. I've been able to find extensive records on the part of Prussia I'm interested in.