Authors: E S Cogan

Published in Ohio Journal of Science, in 1916, in volume 16, pages 161-208

Created: 2010-11-20, modified: 2023-02-16

Authors: J S Hine

Published in Ohio J. Sci, in 1916, in volume 17, pages 21-22

Created: 2011-06-04, modified: 2023-02-16