el-hefny, a. (1964). forecasting for management of seasonal goods inventories. National Planning Institute.
Citace podle Chicago (17th ed.)el-hefny, amina. Forecasting for Management of Seasonal Goods Inventories. cairo: National Planning Institute, 1964.
Citace podle MLA (9th ed.)el-hefny, amina. Forecasting for Management of Seasonal Goods Inventories. National Planning Institute, 1964.
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