The Encyclopedia of Korean Folk Culture consists of eight subjects : Seasonal customs, Folk beliefs, Folk literature, Rites of passage, Folk arts, the Necessities of living (Food, clothing and housing), Livelihood skills and Folk society.
This is what the Government of South Korea use, different from the guide from the Library of Congress. In your research, you might need to check for the idiosyncratic spellings of search terms.
Historical Dictionary of Democratic People's Republic of Korea by 
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