AN average per-hectare yield of 12.075 tons of winter wheat, the highest in China, was reaped in 1975 on the "roof of the world." This record was chalked up by Tibetan and Han workers at the Gyantse...
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AN average per-hectare yield of 12.075 tons of winter wheat, the highest in China, was reaped in 1975 on the "roof of the world." This record was chalked up by Tibetan and Han workers at the Gyantse...