Peter Norton's introduction to computers. Norton, Peter, Computers. Computer software. 004 GLE 1997 A006 Or. Includes index. New York : Glencoe/McGraw Hill, c1997. c1997. Text xxxi, 555 p. : http://www.loc.gov/catdir/description/mh031/96032939.html http://www.loc.gov/catdir/toc/mh031/96032939.html