• publisher: Yale University Press
  • creator: Leo Frederick Rettger , Harry Asher Cheplin
  • contributor: University of California
  • mediatype: texts
  • years: 1921
  • pages: 161
  • language: English
  • lccn: 21011944
  • notes: "Based on investigations conducted at the Sheffield Scientific School of Yale University and presented in lectures delivered during the autumn of 1920 by the senior author, on the Silliman Foundation."
  • download: pdf file