4 · Society, Civilization, Culture
47 · crafts and industries
47I · agriculture, cattle-breeding, horticulture, flowerculture, etc.
47I2 · cattle-breeding, livestock industry
47I23 · poultry farm
47I23(+9) · poultry farm (+ zoological aspects of domestic cattle and poultry)
47I23(+94) · poultry farm (+ animal behaviour)
47I23(+945) · poultry farm (+ animals eating and drinking)
47I23(+9459) · poultry farm (+ animal excreting)
47I23(+94591) ·
poultry farm (+ excrement, dung of animal(s))