@book{66559,
	author = {Vaughan, D. and Malcolm, R. E.},
	title = {Soil organic matter and biological activity},
	publisher = {Martinus Nijhoft,},
	year = {1985},
	series = {Developments in plant and soil sciences},
	address = {Dordrecht, The Netherland :},
	note = {28-174}
}