@book{18467,
	author = {Dahlgren, Bror Eric,},
	title = {A fossil flower.},
	publisher = {Field museum of natural history,},
	year = {1924.},
	series = {Field museum of natural history. Botany leaflet 5},
	address = {Chicago,},
	note = {Signed: B. E. Dahlgren.}
}