ILLIMAR-a computer-based mapping system for Illinois
By: [by] D. H. Swann [and others]
Contributors: Swann, David Henry, 1915-
Series: Circular; 451; Circular (Illinois State Geological Survey) ;; 451.
Published: 1970
Place of publication: Urbana
Language: eng
Number of pages: 24
Subjects: Cartography -- Computer programs; Illinois -- Maps
Notes: Bibliography: p. 21.
Cover title.