00306nam 2201040 45000010005000000030023000050050009000280080041000370820012000781000019000902600024001092500019001332450022001521040StarLibrary Marc Built20180713201711 ||||| |||||||||||amh  a537.167 aalan oppenheim bphi learning c1997 aالطبعة 2 asignals & systems