00310nam a22001337a 4500003000400000005001700004008004100021020001500062040000800077082001200085100001100097245005000108260001800158OSt20220201115023.0220201b |||||||| |||| 00| 0 eng d a0582098157 cH.U a621.381 aMorris aElectical & Electronic Engineering Principles bLongmanc1997