@book{104909,
	author = {Eggert, Erwin,},
	title = {Mathematische Geographie für Lehrerbildungsanstalten},
	publisher = {Project Gutenberg,},
	year = {2020},
	address = {Salt Lake City, UT :},
	note = {Release date is 2020-12-20},
	url = {https://www.gutenberg.org/ebooks/64085}
}