00493    a2200157   4500020001500000082001800015100001200033245008000045260007000125300001800195440002600213650001600239650001400255650003300269650003300302  a9251008590  a333.7616bGIL  aGil, N.  aWatershed development with special reference to soil and water conservation  aItalybFood And Agriculture Organization  Of The Romec1985g1985  ax,257p.c30cm  aFAO soils bulletin 44  aRural lands  aEconomics  aEconomics of land and energy  aNatural resources and energy