. Das Süsswasserplankton; Methode und Resultate der quantitativen Untersuchung. Freshwater animals; Freshwater plankton. Fig. Polyathra platyptera. Dobersdorf. Orig. ^/l. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Apstein, Carl, 1862-. Kiel, Lipsius & Tischer

---

Size: 1611px × 1550px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: ., bookcentury1800, bookdecade1890, booksubjectfreshwa, bookyear1896