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1
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World and regional supply and demand balances for nitrogen, phosphate, and potash, 1992/99-1998
Pubblicazione 1994Libro -
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World and regional supply and demand balances for nitrogen, phosphate, and potash, 1991/92-1997
Pubblicazione 1993Libro -
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The role of fertilizer subsidies in agricultural production a review of select issues.
Pubblicazione 1987Libro -
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