@book{4210,
	author = {Piaggio, H. T. H.},
	title = {An elementary treatise on differential equations and their applications /},
	publisher = {CBS publishers,},
	year = {c1985 [Reprinted 2000, 2003].},
	address = {New Delhi :},
	edition = {First Indian edition.},
	note = {Includes index.}
}