@book {551,
	title = {Britains{\textquoteright} Hoverflies. An introduction to the hoverflies of Britain},
	year = {2015},
	pages = {212},
	publisher = {Princeton University Press},
	organization = {Princeton University Press},
	edition = {Updated Second edition},
	isbn = {069116441X},
	author = {S.G Ball and Morris, R}
}
