TY  - BOOK
AU  - Preppernau, Joan
AU  -  Cox, Joyce
AU  -  Online Training Solutions
TI  - Windows 7 step by step
T2  - Step by step
SN  - 978-81-203-4116-6
AV  - QA76.76.O63P7415 
CY  - New Delhi
KW  -  Computer software
KW  -  Computer systems
KW  -  Distributed operating systems (Computers)
KW  - Computer science
KW  - Operating systems (Computers)
ER  -