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Please register or log-in below for full, free access to the online Lean Logic:


Once you’re logged in, we recommend starting with the Preface as an explanation of this most unique book and its new online features.


Thanks to the regard of Chelsea Green Publishing for the work, this site – containing the full contents of the book that they published with such award-winning beauty – is accessible free-of-charge.  Let’s make good use of it!