@book{52280,
	author = {Ponsen, M. B.},
	title = {The digestive system of Eulachnus brevipilosus Biomer (Homoptera : Aphididae)},
	publisher = {Veenman & Zonen,},
	year = {1981},
	series = {Mededelingen landbouwhogescholl},
	address = {Wageningen :}
}