TY  - BOOK
AU  - Head,George O.
TI  - The autocad 3D companion: the illustrated guide to autocard's third dimension 
SN  - 1566040426
PY  - 1993///
CY  - Chapel Hill, NC
PB  - Ventana Press
KW  - AutoCAD (Computer file)
KW  - Computer graphics
ER  -