1. Urban population densities;Clark;J. Royal Stat. Soc. Ser. A,1951
2. New Tables of the Incomplete Gamma-Function Ratio and of Percentage Points of the Chi-Square and Beta Distributions;Harter,1964
3. Studies in the Structure of the Urban Economy;Mills,1972
4. Urban Economics;Mills,1972
5. Cities and Housing;Muth,1969