abbr. International Passenger Ship Association 國(guó)際客輪協(xié)會(huì); Independent Pool Service Association 聯(lián)合經(jīng)營(yíng)獨(dú)立協(xié)會(huì); International Political Science Association 國(guó)際政治學(xué)協(xié)會(huì); Independent Passenger Steamship Association 獨(dú)立乘客蒸汽船協(xié)會(huì)