00000nam 2200000 4500 INLIS000000000001004 20220716120100.0 220716||||||||| | ||| |||| ||eng|| 0010-072200000001004 eng 808.51 808.51 VER C Verderber, Rudolf F. The Challenge of effective speaking 8th.ed. California xxi, 411 hlm. : ilus.; 23 cm. Public Speaking