TY - BOOK AU - Groth,David AU - Newland,Dan TI - A+ operating system technologies SN - 978-0782128076 AV - QA 76.3 .G759 2001 PY - 2001/// CY - San Francisco PB - Sybex KW - Electronic data processing personnel KW - Certification KW - Computer technicians KW - Study guides KW - Operating systems (Computers) N1 - Includes index ER -