Author: N (Johan August)

Description

T3DDiN (Johan August). The (eo1ogy and. mineral resouroes of the inton and Milan quadrangles. By T.E.Savage and. J.A.Udden. See ILLINOIS, State of. Department of _gistration and Eduoation. Division of the State Geoa&ioa1 Survey. [Bülletins.J 38. Year book for 1917 and 1918, etc. pp. 115-208. Urbana, 1922.

Card ID: 70