The Lean Toolbox Revised Sixth Edition - Paperbackby John Bicheno (Author), Matthias Holweg (Author) This is a revision of the 6th edition of a book that has become a standard reference to Lean principles, systems, and tools. It is used by Lean practitioners and Industrial Engineers in the UK, USA, Ireland, Scandinavia, South Africa, and Australia. Like earlier editions, the book is written in plain language, with minimal padding, especially for busy practitioners and managers at all levels.