@book{226999,
	author = {Zobel, Richard W. and Wright, Sara F.},
	title = {Roots and Soil Management: Interactions between Roots and the Soil / Richard W. Zobel, Sara F. Wright},
	publisher = {American Society of Agronomy; Crop Science Society of America; Soil Science Society of America},
	year = {2005},
	address = {Madison}
}