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Crops --- Tropical crops --- Crop science --- Plantation crops --- Tropical agriculture --- Agricultural crops --- Crop plants --- Farm crops --- Industrial crops --- Crop production science --- Crop sciences --- Agriculture --- Field crops --- Tropical plants --- Farm produce --- Plants, Cultivated --- Agronomy --- Plant products --- Crop science. --- Crops. --- Tropical crops. --- Africa, Sub-Saharan. --- Africa South of the Sahara --- Black --- Sub-Sahara Africa --- Sub-Saharan Africa --- Subsahara Africa --- Subsaharan --- Tropical --- Africa, Sub-Saharan --- Africa, Black --- Africa, Subsaharan --- Africa, Tropical --- Black Africa --- Subsaharan Africa --- Tropical Africa --- Sub-Saharan Africa.