Columbia subject headings:
Harvard subject headings:
Agriculture and energy.
Agriculture and state--Cuba.
Agriculture--Korea (North)--History.
Food industry and trade
Food supply--Forecasting
Fossil fuels
Petroleum industry and trade--Forecasting
Sustainable agriculture
Princeton subject headings:
Agriculture and energy.
Agriculture and state--Cuba.
Agriculture--Korea (North)--History.
Food industry and trade.
Food supply--Forecasting.
Fossil fuels.
Petroleum industry and trade--Forecasting.
Sustainable agriculture.