The document discusses three urban land use models: 1) Burgess's concentric zone model which views cities as consisting of nested rings extending from the CBD including zones of transition, working people, wealthy homeowners, and commuters. 2) Hoyt's sector model which proposes cities grow in wedge-shaped sectors extending from industry centers. 3) Harris and Ullman's multiple nuclei model which sees cities developing from several activity nodes rather than just the CBD, with nodes clustering similar uses and repelling others.