@book{61992,
	author = {Büchner, Ludwig,},
	title = {Darwinismus und Sozialismus: Der Kampf um das Dasein und die Moderne Gesellschaft},
	publisher = {Project Gutenberg,},
	year = {2007},
	address = {Salt Lake City, UT :},
	note = {Release date is 2007-03-06},
	url = {https://www.gutenberg.org/ebooks/20757}
}