00295nam a2200109Ia 4500008004100000020001800041040003800059100001400097245003100111250000800142260003500150211231s9999    xx            000 0 und d  a81-297-0409-9  cJayakar Knowledge Resource Centre  aDix, Alan 0aHuman-computer interaction  a3rd  bPearson EducationaDelhic2004