Page 114 - Soil Degradation, Conservation and Remediation

References 101

USDA Soil Conservation Service (1980) Save soil with terraces. USDA, Des Moines
Walle RJ, Sims BG (1999) Fertility gradients in naturally formed terraces on Honduran hillside
farms. Agron J 91(2):350–353
Williamson B (1993) Urban runoff data book: a manual for preliminary evaluation of stormwater
impacts, 2nd edn, Water Quality Centre Publication. NIWA, Hamilton
Wischmeier WH, Smith DD (1965) Predicting rainfall-erosion losses from cropland east of the
Rocky Mountains – guide for selection of practices for soil and water conservation, USDA
Agriculture handbook no. 282. USDA, Washington, DC
Wischmeier WH, Smith DD (1978) Predicting rainfall erosion losses – a guide to conservation
planning, Agriculture handbook no 537. US Department of Agriculture, Washington, DC
Zachar D (1982) Soil erosion. Elsevier, Amsterdam