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Two thousand miles, twenty million people, two hundred cities—and not one sewer! This, in brief, is the summary of a trip into the interior of China.
One of the most fertile and most densely populated areas in the world is this Yangtse River Valley. There are numberless cities scattered between Shanghai on the coast and the mountains to the far west. While they vary a great deal in many ways, in the new order of things these cities will have to face certain problems of public health which are common to them all.
Congestion is one of these problems. Passing through the cities of the Yangtse Valley, one is constantly impressed with the fact that every available inch of ground has been utilized for building purposes. Compared with the large population within, the area occupied by these cities seems far too small.
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PETER WW. SOME HEALTH PROBLEMS OF CHANGING CHINA. JAMA. 1912;LVIII(26):2023–2024. doi:10.1001/jama.1912.04260060376007
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