The multiple nuclei model is an ecological model created by Chauncy Harris and Edward Ullman in the 1945 article "The Nature of Cities".
Emmylou Harris | Rolf Harris | Mike Harris | Ed Harris | Harris County, Texas | Richard Harris | Harris | Julie Harris | Joel Chandler Harris | Franco Harris | Sir Arthur Harris, 1st Baronet | Bob Harris | Neil Patrick Harris | Ronan Harris | Fred R. Harris | Eddie Harris | Townsend Harris | Tony Harris | Thomas Harris | Major Harris | Katherine Harris | Jonathan Harris | Frank Harris | Paul Harris | James Harris Simons | Bob Harris (radio) | Allan Harris | Tony Harris (cartoonist) | Sean Harris | Phil Harris |