@book{8212,
	author = {Orlov, D. S.},
	title = {Humic substances of soils and general theory of humification /},
	publisher = {A.A. Balkema,},
	year = {c1995.},
	series = {Russian translations series ;},
	address = {Rotterdam ;},
	note = {Translation of: Gumusovye kisloti pochv i obshchaya teoriya gumifikatsii.}
}