October15,1970wasdeclaredInternationalWhiteCaneSafet...
问题详情： October15,1970wasdeclaredInternationalWhiteCaneSafetyDay(IWCSD)forthefirsttimebythePresidentoftheInternationalFederationoftheBlind(IFB).ThisdatewasadoptedatthefirstconventionoftheIFB,hel...