MolluscaBase source request
You have requested access to download the full text of the source (SourceID: 296807):
Pilsbry, H. A. (1939). Land Mollusca of North America (north of Mexico). Volume I Part 1. The Academy of Natural Sciences of Philadelphia Monographs. 3: i-xvii, 1-573, i-ix. Philadelphia [6 December].
Pilsbry, H. A. (1939). Land Mollusca of North America (north of Mexico). Volume I Part 1. The Academy of Natural Sciences of Philadelphia Monographs. 3: i-xvii, 1-573, i-ix. Philadelphia [6 December].