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Spatial Autocorrelation
by A. D. Cliff, J. Keith Ord
Poliomyelitis
by M. R. Smallman-Raynor, A. D. Cliff
Infectious Diseases: a Geographical Analysis
by A. D. Cliff, M. R. Smallman-Raynor, P. Haggett, D. F. Stroup, S. B. Thacker