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GTTAGreater Toronto Transportation Authority
GTTAGuyana Table Tennis Association
GTTAGeorgian Triangle Tourist Association (Collingwood, Ontario, Canada)
GTTAGarment, Textile and Technology Association (Ireland)
GTTAGlobal Technology Transfer Alliance
References in periodicals archive ?
There's the GTAA (Greater Toronto Airports Authority), the GTMA (Greater Toronto Marketing Alliance), the GTTA (Greater Toronto Transportation Authority, now Metrolinx), the TRCA (Toronto and Region Conservation Authority), the TRRA (Toronto Region Research Alliance) and TRIEC (Toronto Region Immigrant Employment Council); and the Greater Golden Horseshoe encompasses regional planning.