@incollection{robertson_soil_2006, address = {Boca Raton, Florida}, title = {Soil system management in temperate regions}, booktitle = {Biological {Approaches} to {Sustainable} {Soil} {Systems}}, publisher = {CRC Press}, author = {Robertson, G.P. and Grandy, A.S.}, editor = {{N.T. Uphoff}}, year = {2006}, keywords = {KBS} }