THE Chingchuan People's Commune in Yumen, Kansu Province, is in a high and cold area in northwest China. At one time it had only poor farmland. It is enclosed by large sandy areas on three sides, and...
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THE Chingchuan People's Commune in Yumen, Kansu Province, is in a high and cold area in northwest China. At one time it had only poor farmland. It is enclosed by large sandy areas on three sides, and...