Multiple nuclei model (1945)
CBD was not the sole of change.
equal weight must be given to
- old community on city outskirts around which new suburbs clustered
- an industrial district that grew from an original water front location
- low in come area that began because of some social stigma attached to a site
many criticize to this theory
encompasses a larger spectrum of economic and social possb.
LEDC urban structure
push f: low employment