TY  - BOOK
AU  - Petersen, Richard
TI  - The complete reference : ubuntu
SN  - 9780070252844.
U1  - 004.432L 
PY  - 2009///,
CY  - New Delhi: 
PB  - Tata McGraw-Hill Publishing Company Limited. 
KW  - Computer Operating Systems
KW  - Mathematics
KW  - MS-DOS 0512
N1  - index
ER  -