I was thinking that perhaps we can get more business books on Kindle store: if enough people ask for a book to be digitized, Amazon may convince the publisher to do so. This is a list of some books that came to my mind:
https://www.amazon.com.br/Logistics-...ain+Management
This a logistics book by Donald Waters.
https://www.amazon.com.br/Economic-C...ctured+Product
The classic book on quality control by Walter Shewhart, an engineer who worked at Bell Telephone
https://www.amazon.it/Introduction-T...ve+Maintenance
This is a book about TPM by the japanese pioneer of the field Seiichi Nakajima
https://www.amazon.com.br/Methods-Ti...me+Measurement
This is a book about Methods-Time Measurement by Harold Maynard, the first to systematize MTM
https://www.amazon.it/Theory-Invento...ory+Management
This is a classic book on inventory management by management scientist Thomson M. Whitin
https://www.amazon.it/Studies-Mathem...and+Production
This is a classic book on inventory management by Kenneth Arrow, an economics nobel
https://www.amazon.com.br/Orlickys-M...ments+Planning
A book on MRP written by its pioneers Joseph Orlickly and George W. Plossl
https://www.amazon.it/Scientific-Pro...s+and+Industry
This a book by mathematician Andrew Vazsonyi which discuss mathematical properties of planning which are connected to the MRP approach.