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2. BROCKINGTON, F., World Healthy 1958.
3. The geographical distribution of cancer mortality in Wales, 1947–53;HOWE;Trans, and Papers Inst. Brit. Geographers,1960
4. The geographical variation in disease mortality in England and Wales in the mid-twentieth century;HOWE;Advancement of Science,1961
5. HOWE, G. M., National Atlas of Disease Mortality, 1963.