@book{24484,
	author = {Steinmann, G. and Graeff, Fr.},
	title = {Geologischer führer der umgebung von Freiburg.},
	publisher = {Akademische verlagsbuchhandlung von J.C.B. Mohr (P. Siebeck),},
	year = {1890.},
	address = {Freiburg i.B.,},
	note = {Plate I printed on front lining-paper.}
}