Google Books API - How do I separate Book from Book Edition?

I'm using Google Book Search API to add missings bits and pieces to my database.

Problem is that The API gives me back a list of book editions, and not reference to the original book itself.

The data 开发者_运维问答I'm trying to get is this:

Original title: The Hobbit

Original year of publication: 1937

Can anyone help?

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Just in case anyone asks: I'm developing this in Python.

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Try with this snippet:

entry = self.service.get_by_google_id("XV0NAQAAIAAJ")
print entry.dc_title[0].text
print entry.date.text

Result is:
The hobbit
1937