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			Top of the CONA Hierarchy
			.... Built Works (CONA facet)
			........ <B> (8)

			............ Built Works by class: landscape architecture, spaces, agricultural, and animal husbandry structures
			................ Balboa Park, San Diego
			.................... Casa de Prado
			.................... El Prado [N]
			.................... Panama California Exposition, San Diego [N]

........ <U> (1)