@book{57745,
	author = {"Black, C.A.,Ed."},
	title = {Methods of soil analysis.Part I : Physical & Micrological properties including statistics of measurement and sampling (Agronomy Monographs No. 9) 2nd printing 1969},
	publisher = {American Soc. Agronomy},
	year = {"Madison, Wisconsin"},
	address = {1965}
}