Geological survey of Illinois BHL19706353
Summary
Geological survey of Illinois A.H. Worthen, director ... Published by the authority of the legislature of Illinois
Tags
files from the biodiversity heritage library
geological survey of illinois
outcrops in illinois
geology
natural history
paleontology
ultra high resolution
high resolution
Date
1825 - 1925
Source
Biodiversity Heritage Library
Link
Copyright info
public domain