000 00309nam a22001097a 4500
082 _a388.3122
_bSEL
_cD
245 _aSelecting digital computer signal systems
260 _aWashington
_bThe World Bank
300 _aviii, 76 p, :
_bill, :
_c16 Cm
526 _a0
_b0
_c0
_d388_312200000000000_SEL
942 _2ddc
_cBK
999 _c543305
_d543305