. Echinoidea of the Swedish South Polar Expedition. Sea urchins. 82 TH. MORTENSEN, (Schwed. 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 Mortensen, Th. (Theodor), 1868-1952; Svenska sydpolar-expeditionen (1901-1903). Stockholm : Lithographisches Institut des Generalstabs

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Keywords: ., bookcentury1900, bookcollectionbiod, bookdecade1910, bookyear1910