Huuuuge Dilemma...

I am needing to get a copy of the following text for a George Eliot module I'm studying:

''The Natural History of German Life''.

I'm thinking it might be a book? Or is it a journal?

Either way, I'm desperately needing to find out as I have an essay due in on Friday and i'm told it's the primary source for background reading.

I've been into the Uni bookshop and it didn't feature on the search and a google search wasn't helpful either.

If anyone has the knowledge, they will make a very idiotic girl very happy indeed.