Torthaí cuardaigh - (("Soil conservation") OR ("Soil construction"))

Cuardaigh le haghaidh roghanna malartacha:

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Beachtaigh na torthaí
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    Soil and water conservation for productivity and environmental protection de réir Troeh, Frederick R.

    Foilsithe / Cruthaithe 1980
    Ábhair: “…Soil conservation…”
    LEABHAR