TY  - BOOK
AU  - Omura,George.
TI  - AutoCAD 13
SN  - 8170295173
U1  - 620.004 
PY  - 2002///
CY  - Newdelhi
PB  - BPB Publications
KW  - block
KW  - blipmode
KW  - chamfer
ER  -