@book{id_11945,
author = "Petzl, Joseph",
title = "Ueber ein Fossil aus den Thonmergel-Flötzen bey Amberg",
year = "1809",
address = "München",
series = "Denkschriften",
volume = "[1,8] 7 : Mathematisch-physicalische Classe",
url = "http://publikationen.badw.de/de/003394945",
}