See this worth-it book:

UPDATE (15 July 2014): We were advised by commenter Victoria that our earlier link is no longer working. The post has therefore been amended to include a new link.

UPDATE (24 May 2018): Links to online copies of the text were deleted motu proprio out of concern for their copyright status, and were replaced with links to sites from which the book may be purchased.

 

 

 

 

 

 

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