TY  - BOOK
AU  - 3G E-learning LLC, USA
AU  - 3G E-Learning,
TI  - Information Technology System Administration
SN  - 9781984658548
U1  - 025.04 
PY  - 2022///
CY  - New York, United States of Amerca
PB  - 3G E-learning LLC
N1  - Includes bibliographyical references  and index
ER  -