Head, George O., 1945- 1000 AutoCAD tips and tricks / George O. Head, Jan Doster Head. - 4th ed. rev. and updated - Chapel Hill, NC : Ventana Press, c1995. - lvi, 567 p. : ill. + 1 3 1/2 in. computer disk. "For release 13 for windows."--Tp. ISBN: 0940087537 (pbk.) : $24.95 Subjects--Uniform Titles: AutoCAD (Computer file)