Soil conservation: an intertnational study

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Bibliográfalaš dieđut
Searvvušdahkki:	Food and Agriculture Organization of the United Nations
Materiálatiipa:	Girji
Giella:	English
Almmustuhtton:	United Nations : Food and Agriculture Organization, 1952
Fáttát:	Soil conservation Economics factors National soil conservation program Forest Lands
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