Gw mau tau Lihat pula dari Konservasi tanah

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Perimeter landscaping of Carneros Business Park, Lumina Technologies, Santa Rosa, Ca. (2002)

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Dan Yaron, Salinity in Irrigation and Water Resources, Marcel Dekker, New York (1981)

Bill Mollison, Permaculture: A Designer's Manual, Tagari Press, (1988). Increases in porosity enhance infiltration and thus reduce adverse effects of surface runoff

Arthur T. Hubbard, Encyclopedia of Surface and Colloid Science Vol 3, Santa Barbara, California Science Project, Marcel Dekker, New York (2004)