A. E. (Arnold Edward) Ortmann – författare

South American Naiades

a Contribution to the Knowledge of the Freshwater Mussels of South America; vol. 8 no. 3

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

Mexican, Central American, and Cuban Cambari

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

Grundzüge Der Marinen Tiergeographie. Anleitung Zur Untersuchung Der Geographischen Verbreitung Mariner Tiere, Mit Besonderer Berücksichtigung Der Dekapodenkrebse

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

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