Vintage textbook on programming industrial controllers / PLCs

Set of vintage textbook for - Programmable Controllers - Theory and Implementation - by LA Bryan and EA Bryan. It is copyright 1988 and has 566 pages. There is also a matching 327 page - Workbook and Study Guide - . These are illustrated with flow charts, logic diagrams etc..

These are from the estate of an electrical engineer and are in nice condition.

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Item No. n1111633