Note 35 — Chapter IX · PROOFS FROM VARIATION OF ORGANIC FORMS, ARTIFICIAL AND NATURAL.
Reading edition
“Genesis of Tertiary Species of Planorbis at Steinheim.” A. Hyatt, Anniversary Memoir of the Boston Society of Natural History, 1880.
Reading edition
“Genesis of Tertiary Species of Planorbis at Steinheim.” A. Hyatt, Anniversary Memoir of the Boston Society of Natural History, 1880.