Directory of Illinois sand and gravel producers.
Series: Mineral economics brief 18
Publisher: Illinois State Geological Survey
Published: 1967
Place of publication: Urbana
Language: eng
Number of pages: 28
Subjects: Sand -- Illinois -- Directories.; Gravel -- Illinois -- Directories.
Notes: "Replaces the Directory published in April 1963 as Mineral resources brief 6, which is now out of print."