@book{29326,
	author = {Kräusel, Richard, and Dolianiti, Elias,},
	title = {Restos vegetais das camadas Picos, devoniano inferior do Piauí /},
	publisher = {[s.n.],},
	year = {1957.},
	address = {Rio de Janeiro :},
	note = {Summary in German.}
}