Aircraft Maintenance & Repair, Eighth EditionRonald Sterkenburg, Michael Kroes · First published 2019Open the Tome
Aircraft Basic Science, Eighth EditionMichael J. Kroes, James R. Rardon, Michael S. Nolan · First published 2013Open the Tome
Aircraft Maintenance and Repair with Study GuideMichael J. Kroes, William A Watkins, Frank Delp · First published 2007Open the Tome
The American west, as seen by Europeans and AmericansRob Kroes, Michael P. Malone · First published 1989Open the Tome
