title: A functional classification of metropolitan communities.
mesh_terms: D002965:Classification; D003132:Commerce; D004467:Economics; D004493:Education; D006801:Humans; D007221:Industry; D008722:Methods; D009934:Organization and Administration; D011153:Population; D013038:Specialization; D013223:Statistics as Topic; D014481:United States; D014507:Urbanization