@book{650,
	author = {Mapa R.B and Somasiri  S.},
	title = {Soil  Of The  Wet Zone  Sri Lanka},
	publisher = {Soil  Science  Society  of Sri  Lanka},
	year = {1999},
	address = {Vidya  Mandiraya   120/10  Wijerama  mawatha,Colonbo 7}
}