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| 联合国统计指标解释节选(八) | |
| 作者姓名： | 过季彤 |
| 摘 要： | The index numbers show the relative level of the aggregate volume ofagricultural production for each year incomparison with the base poriod 1969-71．They are based on the sum of price-weighted quantities of different agricul-tural commodities produced after deduc-tions of quantities used as seed andfeed weighted in a similar manner. Theresulting aggregate represents. therefore, |
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