@book{111293,
	author = {Zittel, Karl Alfred von,},
	title = {Grundzüge der Paläontologie (Paläozoologie). 1. Abteilung: Invertebrata.},
	publisher = {Project Gutenberg,},
	year = {2023},
	address = {Salt Lake City, UT :},
	note = {Release date is 2023-04-16},
	url = {https://www.gutenberg.org/ebooks/70567}
}