Pragmatic Version Control Using Subversion. 2nd Edition by Mike Mason
This book covers the theory behind version control and how it can help developers become more efficient, work better as a team, and keep on top of software complexity. Version control, done well, is your "undo" button for the project: nothing is final, and mistakes are easily rolled back. This book describes Subversion 1.3, the latest and hottest open source version control system, using a recipe-based approach that will get you up and running quickly and correctly. Learn how to use Subversion the right way-the pragmatic way.