Parsons, June Computer concepts 2013 : comprehensive / June Parsons and Dan Oja - Boston, Mass. : Cengage Learning, c2013. - xxiv, 795 p. : ill. ; 29 cm. ISBN: 9781133190837 LCCN: Subjects--Topical Terms: ComputersStudy and teachingProblems exercises etc LC Class. No.: QA76.27 / .P36 2013