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Dyfyniad Arddull ChicagoEconomic Survey of Japan (1959-1960). Tokyo: The Japan Ecafe Association, 1960.
Dyfyniad MLAEconomic Survey of Japan (1959-1960). Tokyo: The Japan Ecafe Association, 1960.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.