On Natural Selection and Separation is an unchanged, high-quality reprint of the original edition...

Crustaceen ist ein unveränderter, hochwertiger Nachdruck der Originalausgabe aus dem Jahr 1894. H...

Die Decapoden-Krebse des Strassburger Museums ist ein unveränderter, hochwertiger Nachdruck der O...

Die Klassen und Ordnungen der Arthropoden- wissenschaftlich dargestellt in Wort und Bild ist ein ...

Decapoden und Schizopoden ist ein unveränderter, hochwertiger Nachdruck der Originalausgabe aus d...

This work has been selected by scholars as being culturally important, and is part of the knowled...

This work has been selected by scholars as being culturally important, and is part of the knowled...

A Monograph of the Najades of Pennsylvania; vol. 8 no. 1

The Crawfishes of the State of Pennsylvania; vol. 2 no. 10

Mexican, Central American, and Cuban Cambari

South American Naiades: a Contribution to the Knowledge of the Freshwater Mussels of South Americ...

Grundzüge Der Marinen Tiergeographie. Anleitung Zur Untersuchung Der Geographischen Verbreitung M...

South American Naiades; a Contribution to the Knowledge of the Freshwater Mussels of South America

South American Naiades; a Contribution to the Knowledge of the Freshwater Mussels of South America

Arnold Edward Ortmann was a pioneering paleontologist and geologist who made important contributi...

A Monograph of the Najades of Pennsylvania Volume no. 6; Volume 4

This monograph offers readers a detailed look at the Najades of Pennsylvania, a type of freshwate...

Arnold Edward Ortmann was a pioneering paleontologist and geologist who made important contributi...