@book{33709,
	author = {Subba Rao, N. S. (Nanjappa Shamanna), 1926},
	title = {Soil microorganisms and plant growth /},
	publisher = {Oxford & IBH Publishing Co. Pvt.Ltd.,},
	year = {1977.},
	address = {New Delhi :},
	edition = {2nd ed.}
}