@Book{Vogel1870,
author  = "Vogel, August",
title   = "Ueber das Verhältniss der Harnsäure und des Guanin's zur Vegetation",
year    = "1870",
address = "München",
series  = "Abhandlungen",
volume  = "Bd. 10, Abth. 3 = [12]",
url     = "https://publikationen.badw.de/de/003082932",
}