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Technical assistance in fisheries monitoring control and surveillance : a historical perspective of FAO's role / David J. Doulman.
- FAO,
- 1994.
- Rome :
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Fertilizer use by crop = Utilisation des engrais par culture = Utilización de fertilizantes por cultivo / IFA, IFDC, Food and agriculture organization of the United nations.
- FAO,
- 1994.
- Rome :