@book {376,
	title = {Sahapisti{\"a}iset 4. Havupisti{\"a}iset (Diprionidae).},
	series = {Maatalous- ja mets{\"a}el{\"a}intieteen laitos. Julkaisuja},
	volume = {10},
	year = {1987},
	publisher = {Helsingin Yliopisto},
	organization = {Helsingin Yliopisto},
	keywords = {Diprionidae, Symphyta},
	author = {Viitasaari, M.}
}
