Introduction to Computers 2020 EditionCésar Herrera, Darrell Hajek · First published 2020Open the Tome
Principles of Operating Systems. 2020 EditionCésar Herrera, Flor Narciso, Darrell Hajek · First published 2020Open the Tome
Introduction to Computers, 2019 EditionCésar Herrera, Darrell Hajek · First published 2019Open the Tome
Introduction to LibreOffice Productivity SoftwareDarrell W. Hajek · First published 2019Open the Tome
Principles of Operating Systems, 2019 EditionDarrell Hajek, Cesar Herrera · First published 2019Open the Tome
Introduction to Computers 2018 EditionDarrell Hajek, César Herrera · First published 2018Open the Tome
