一次産品
Kuchiki, Akifumi, "The Pricing Mechanism of Primary Commodities since the 1970s", The Developing Economies 28.1 (1990.3): 95-110
Kuchiki, Akifumi, "The Pricing Mechanism of Primary Commodities since the 1970s", The Developing Economies 28.1 (1990.3): 95-110