Author: H (Ralph Kent)

Description

UpH (Ralph Kent). - Illinois clays anct shales as tortar mix. By i-.K. Burgh, J.E. Larar nd FLE. Grii, etc. Urbana, See ILLThOIZ, Stteç. Departinto’ Registration and Education. Division of State ico.iogical Survey. [ieport of 1nvestiations, 100.J

Card ID: 391