@book{25187,
	author = {Donahue, Roy L.  and Miller, Joyce U. },
	title = {Soils: an introduction to soils and plant growth/by Roy L. Donahue, Raymond W. Miller and Joyce U. Miller},
	publisher = {Prentice Hall of India,},
	year = {1992.},
	address = {New Delhi:},
	edition = {6th.ed.}
}