Decker, Rick The analytical engine / Rick Decker and Stuart Hirshfield. - 1a ed. - Belmont, CA. : Wadsworth Publishing Company, c1990 - vi, 138 p. : il. ; 28 cm. ISBN: 0534125417 Subjects--Topical Terms: InformáticaInternet LC Class. No.: QA76 / D43 1990