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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 generosity of Chelsea Green Publishing this site – containing the full contents of the book that they published with such award-winning beauty – is accessible free-of-charge for the first three months from its March 16th, 2020 unveiling.  Let’s make good use of it!