@Book{Spirgatis1870,
author  = "Spirgatis, H.",
title   = "Ueber das Harz der Tampico-Jalape",
year    = "1870",
address = "München",
series  = "Sitzungsberichte",
volume  = "1870,2,8",
url     = "https://publikationen.badw.de/de/003396469",
}