. Echinoidea. Sea urchins. 19. i ^^^^S^'- ^^^3 ^H ^H|j|^^ ^H Ih. 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. Copenhagen, Printed by Bianco Luno

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Keywords: ., bookcentury1900, bookcollectionbiod, bookdecade1900, bookyear1903