Note 25 — Chapter I · INTRODUCTION—POSITION OF MOLLUSCA IN THE ANIMAL KINGDOM—CLASSIFICATION—ORIGIN OF LAND AND FRESH-WATER MOLLUSCA
Reading edition
Köhler, Zool. Jahrb. vii. 1893, p. 1 f; Haller, Arb. Zool. Inst. Wien, x. p. 71.
Reading edition
Köhler, Zool. Jahrb. vii. 1893, p. 1 f; Haller, Arb. Zool. Inst. Wien, x. p. 71.