@book {2909,
	title = {Suomen petopisti{\"a}iset (SPHECIFORMES)},
	series = {PDF-m{\"a}{\"a}ritysoppaat},
	year = {2022},
	pages = {133},
	publisher = {Omakustanne},
	organization = {Omakustanne},
	keywords = {pdf},
	author = {Kerppola, S.}
}
