@incollection{mul_1851.1848, title = {Monographie der Petrefacten der Aachener Kreideformation. Zweite Abtheilung}, author = {Müller, Joseph }, year = {1851}, booktitle = {Müller: Monographie der Petrefacten der Aachener Kreideformation}, publisher = {(Henry & Cohen) Bonn}, journal = {(Henry & Cohen) Bonn}, volume = {}, pages = {1–88}, url = {https://doi.org/10.3931/e-rara-73557}, doi = {10.3931/e-rara-73557} }