Bilaketaren emaitzak
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1
Yield and fertilizer study on Creeping Sitao and Australian Bush Sitao
Argitaratua 1974Continuing Resource -
2
World and regional supply and demand balances for nitrogen, phosphate, and potash, 1992/99-1998
Argitaratua 1994Liburua -
3
The role of fertilizer subsidies in agricultural production a review of select issues.
Argitaratua 1987Liburua -
4
World and regional supply and demand balances for nitrogen, phosphate, and potash, 1991/92-1997
Argitaratua 1993Liburua -
5
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6
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7
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8
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9
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10


