The Adventures of Donna Sophia and. Doggy Spa DayRobert Filer, Cristian Gaitan · First published 2018Open the Tome
The Adventures of Donna Sophia and... Where is Squeaky?Robert Filer · First published 2016Open the Tome
Programmable controllers using Allen-Bradley SLC 500 and ControlLogixRobert Filer, George Leinonen · First published 2001Open the Tome
UFOsRobert C. Trundle, Robert Trundle, George Filer, Richard Haines · First published 2000Open the Tome
Programmable controllers & designing sequential logicRobert Filer · First published 1992Open the Tome
