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Are you John R. Hackworth, author of the books below?
Programmable Logic Controllers by John R. Hackworth Electrical Machines by John R. Hackworth Programmable Logic Controllers by John R. Hackworth Fundamentals of Electrical Engineering and Technology by William D. Stanley Experiments Principles Elect Devices L/M by John R. Hackkworth John R. ... Digital signal processing by William D. Stanley Student CD for Stanley/Hackworth/Jones' Fundamentals of Elect... by William D. Stanley


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