Programmable Logic Controllers By Bolton, William William Bolton

Loose Leaf for Programmable Logic Controllers by Frank D. Petruzella

Programmable Logic Controllers, Second Edition By W. Bolton

Programmable Logic Controllers,W. Bolton

Programmable Logic Controllers by Frank Petruzella

Programmable Logic Controllers - Bolton, William

Introduction to Programmable Logic Controllers 2nd Edition by Mazur & Weindorf

Programmable Logic Controllers: - Hardcover, by Webb John W.; - Very Good