Soil degradation a threat to developing-country food security by 2020? by Scherr, Sara J.

The On-site economic value of soil erosion control by Rapera, Corazon L.

Alleviating soil acidity with organic matter, lime and phosphorus application by Lucresio, E.S

Modern project management techniques for the environmental remediation industry by Havranek, Timothy J.

Erosion control in the tropics by Huypers, Hil, Mollema, Anne, Topper, Egger

Advances in soil science soil processess and water quality by Lal, R.

Soils an introduction by Singer, Michael J. (Michael John) 1945-

The Philippines recommends for soil fertility management Philippine Council for Agriculture, Forestry and Natural Resources Research and Development

Agricultural engineering technologies for soil and water resources conservation and management.

The lysimeter concept environmental behavior of pesticides

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