301 africa arab architectureandsociety camps citiesandtowns civilization communitylife companytownarchitecture companytowns concentrationcamps congresses dwellings gregor history home housing humangeography islamicarchitecture islamiccitiesandtowns islamiccountries middleclass north pictorialworks realestatedevelopment refugeecamps sailer security(psychology) securitymeasures sextourism socialaspects socialdistance sociology spatialbehavior unitedstates urban westernsahara