00478nam a22001817a 4500003000500000005001700005008004100022010001000063011001000073035001000083040000900093082001600102100002600118245006200144260003000206300001900236650004100255CHAP20220329141617.0971013s1971            r     00010     d  a70967  a71939  a81493  cCHAP  a651.264bD300aDavenport, William P.  aModern data communicationb: concepts, language and media  aNew York :bPitman,c1971  a200 p.b: ilus14aProcesamiento automático de datos.