CHINA'S civil aviation moved forward very fast during the First Five-Year Plan. Between 1952 and 1957, the number of air routes increased from 10 to 29. Their total length doubled - from 13,000 to...
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CHINA'S civil aviation moved forward very fast during the First Five-Year Plan. Between 1952 and 1957, the number of air routes increased from 10 to 29. Their total length doubled - from 13,000 to...