Head, George O., 1945- 1000 AutoCAD tips & tricks / George O. Head & Jan Doster Head. - 3rd ed. - Chapel Hill, NC : Ventana Press, c1993. - xlix, 686 p. : ill. ; 24 cm. - AutoCAD reference library . "For release 12." Includes indexes. ISBN: 1566040078 : $27.95 9781566040075 LCCN: 92031100 Subjects--Uniform Titles: AutoCAD. Subjects--Topical Terms: Computer graphics. LC Class. No.: T385 / .H37 1993 Dewey Class. No.: 620.0042 HEA