. Die geographische Verbreitung der Oligochaeten. Oligochaeta. r>4 s 'i 03 a> taA. 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 Michaelsen, W. (Wilhelm), 1860-1937. Berlin : R. Friedländer

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Keywords: ., bookcentury1900, bookdecade1900, bookpublisherberli, bookyear1903