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Keywords from Image Description:
Natural history of the animal kingdom for the use of young people Plate XXI . Gastropoda Univalve Shells and Slugs Lamellibranchiata Bivalve Shells XXI Wale Snail Pj Ji ZZs Tm 't ' ' ' ' ' ' ' ' ' ' ' ' ruM Garden Slug ri Ww ' C' ' ' ' ' Red Slag mmoralis ' ' 'mar rfas EaiWe Snail Helix pomatia Ojiln Trtdacna gigas cMop