@book {49350, title = {Diptera scandinaviae, disposita et descripta}, volume = {12}, year = {1855}, pages = {xx + 4547-4942}, address = {Lundae}, author = {Zetterstedt, Johann Vilhelm} } @book {49349, title = {Diptera scandinaviae, disposita et descripta}, volume = {11}, year = {1852}, pages = {xii + 4091-4545}, address = {Lundae}, author = {Zetterstedt, Johann Vilhelm} } @inbook {49347, title = {Dipterologia Scandinaviae, Sectio Tertia [Section 3] Diptera.}, booktitle = {Insecta Lapponica}, year = {1838}, pages = {477-868}, address = {Leipzig}, author = {Zetterstedt, Johann Vilhelm} }