You are looking on one 5 1/4" by 8 1/4"272 Page softcover copy of "UNDERSTANDING ELECTRONIC CONTROL OF ENERGY SYSTEMS" developed and published by Texas Instruments Learning Center by Don L. Cannon,printed in1982.This item is in good condition with some soiling of the covers. All pages are clean and tight.Chapters include:major sources of energy, energy conversion, electronic control functions, how to control motors and generators, how to control heating and air conditioning systems, how to control solar energy, controlling internal combustion engines, how nuclear energy is controlled, and how to use programmable energy controllers. Thanks for Looking.A3***Powered by eCRATER