The disease kala-azar, scourge of the villages north of the Yangtze River for nearly a century, has been almost wiped out in China. Take for example Shantung province, which was the most seriously...
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The disease kala-azar, scourge of the villages north of the Yangtze River for nearly a century, has been almost wiped out in China. Take for example Shantung province, which was the most seriously...