@book{116077,
	author = {Haeckel, Ernst,},
	title = {Das Protistenreich},
	publisher = {Project Gutenberg,},
	year = {2025},
	address = {Salt Lake City, UT :},
	note = {Release date is 2025-02-12},
	url = {https://www.gutenberg.org/ebooks/75352}
}