Additional sources that could be useful

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As of October 2016, this article only had two sources. Here are an additional 9 sources that editors may peruse:

Peaceray (talk) 17:41, 31 October 2016 (UTC)Reply

Thanks, I'm afraid most of the Google Books ones aren't viewable though. Prioryman (talk) 20:15, 31 October 2016 (UTC)Reply