| Citation | Holzapfel, E., 1898. Die Geologie des Nordabfalles der Eifel mit besonderer Berücksichtigung der Gegend von Aachen. Abhandlungen der Königlich Preussischen Geologischen Landesanstalt n.f. Heft 66. 218 p. |
| DOI / ISBN | |
| PDF/Reference URL | https://www.biodiversitylibrary.org/page/57597709 |
| Ref. No. | 135385 |
| Language | German |
| Usage | not used yet |
| Comments on the publication | 2 pls. & 15 figs. Contains incidental reference to fishes. |
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