@book{201759,
	author = {Knowlton, G. F. and Pack, H. J.},
	title = {Notes on Utah syrphidae  /},
	address = {:},
	note = {Sobretiro de Pan-Pacific entomologist 6 (4): 182-189, 1930.                     Encuadernado con: Notes on american two-winged flies of the family sapromyzidae/by J. R. Malloch                                                74-61}
}