R, Lal .
Soil Erosion Research Methods / Textual Documents LAL. - Netherlands : Soil and Water Conservation Society , 1988. - P.115; bibl.100-110 : tables, figs, plates, Appx., ; .
Soil & Soil conservation
631.45 / LAL
Soil Erosion Research Methods / Textual Documents LAL. - Netherlands : Soil and Water Conservation Society , 1988. - P.115; bibl.100-110 : tables, figs, plates, Appx., ; .
Soil & Soil conservation
631.45 / LAL