The World Bank / FAO / UNIDO / Industry / Fertilizer Working Group. (1994). World and regional supply and demand balances for nitrogen, phosphate, and potash, 1992/99-1998. The World Bank.
Citace podle Chicago (17th ed.)The World Bank / FAO / UNIDO / Industry / Fertilizer Working Group. World and Regional Supply and Demand Balances for Nitrogen, Phosphate, and Potash, 1992/99-1998. Washington, D.C: The World Bank, 1994.
Citace podle MLA (9th ed.)The World Bank / FAO / UNIDO / Industry / Fertilizer Working Group. World and Regional Supply and Demand Balances for Nitrogen, Phosphate, and Potash, 1992/99-1998. The World Bank, 1994.
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