@book{52284,
	author = {Ponsen, M. B.},
	title = {The digestive system of Subsaltusaphis ornata (Homptera : Aphididae)},
	publisher = {Veenman & Zonen,},
	year = {1979},
	series = {Mededelingen Landbouwhogeschool},
	address = {Wageningen :}
}