@article {22,
	title = {Ecological groups and morphoecological characteristic of the investigated from the family Staphylinidae (Coleoptera) from the region of Pleven district},
	journal = {Izvestiia na Muzeite v Severozapadna BulgariiaIzvestiia na Muzeite v Severozapadna Bulgariia},
	volume = {12 },
	year = {1987},
	pages = {157-172},
	author = {Raichev, I. M.}
}
