YDHI - What does YDHI stand for? The Free Dictionary
References in periodicals archive
225; Moji tetsudu kyoku, Kammon renraku kyakuka zushin no susei to kaitei suido no ydhi
ni kansuru chousa (Researches on trends in the growth of freight and passenger movement across the straits and issues of maritime traffic) (Moji, 1926), pp.