Bedrock topography of Illinois
Publisher: Illinois State Geological Survey
Published: 1950
Place of publication: Urbana
Language: eng
Number of pages: 114
Description: <a href="http://uf.catalog.fcla.edu/uf.jsp?st=UF022105916%26ix=pm%26I=0%26V=D%26pm=1" rel="nofollow">http://uf.catalog.fcla.edu/uf.jsp?st=UF022105916%26ix=pm%26I=0%26V=D%26pm=1</a>