00361nam a2200157Ia 45000010006000000050017000060080041000230410008000640820017000721000027000892450028001162600009001443000034001536500008001876540008001951924820260306171730.0260306s9999||||xx |||||||||||||| ||und|| aESP a658.812bH76 aHorovitz, JacqueseAUT 0aLa calidad del servicio c1991 axiii, 105 páginas :c23 cm. aGEN aCAN