@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}
}