The document discusses several urban morphology models: 1) Burgess' concentric zone model which depicts a city growing outward from the central business district in concentric rings with different land uses and building types. 2) Hoyt's sector model where cities grow in wedge-shaped sectors driven by the location of industries. 3) A LEDC model where housing quality decreases with distance from the central business district unlike in MEDCs. It also briefly covers bid rent theory which explains how land uses result from economic competition for accessible locations.