@book{3241,
	author = {McMichael, Bobbie Lee, },
	title = {Plant roots and their environment :},
	publisher = {Elsevier, },
	year = {1991},
	series = {Developments in agricultural and managed-forest ecology ;},
	address = {Amsterdam ; New York :},
	note = {Based on papers presented at a symposium organized by the International Society of Root Research in Uppsala, August 1988}
}