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J <br />Cli t y o f RI 'o' '111e 21 OcIt 19,89 Page Two <br />0 <br />orga,n�s go Into resonance At some levels and frequencies, <br />peoplel become fatigued and h�av,e t,rioubile, co�n�cen�trationg or <br />restA.ng ei We dia t establish s,uch norms and related vibra� <br />tion char act er 1, stics but are fully able tio analyze vIl*brationi <br />a d relate them, tio publi,shed no�rm,s i,f yo�u so ask. <br />