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Fig. 1.

Map showing production sites of inorganic fertilizer (IOF, closed square), plant-based compound fertilizer (PCF, open circle), and organic fertilizer (OF, closed triangle) manufactured in South Korea. The darker areas represent lands located in the higher altitudes.

Episodes 2019;42:313~319 https://doi.org/10.18814/epiiugs/2019/019025
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