Lean Leadership BASICSMichael Meyers, Charles W. Protzman III, Daniel Protzman, William Keen, Cliff Owens · First published 2021Open the Tome
The taxation of petroleum and mineralsPhilip Daniel, Michael Keen, Charles P. McPherson · First published 2010Open the Tome
Mid-tertiary Cytherettinae of North-West EuropeMichael Charles Keen · First published 1972Open the Tome
