Note 31 — Chapter I · INTRODUCTION—POSITION OF MOLLUSCA IN THE ANIMAL KINGDOM—CLASSIFICATION—ORIGIN OF LAND AND FRESH-WATER MOLLUSCA
Reading edition
SB. Naturf. Gesell. Leipz. 1886–87, pp. 40–48.
Reading edition
SB. Naturf. Gesell. Leipz. 1886–87, pp. 40–48.