Mineral production in Illinois in 1966 /
W.L. Busch.
APA Citation
Busch, W. L., Illinois. Dept. of Registration and Education., Illinois State Geological Survey. (1968). Mineral production in Illinois in 1966. Urbana: Illinois State Geological Survey.
MLA Citation
Busch, Willis L, Illinois. Dept. of Registration and Education, and Illinois State Geological Survey. Mineral Production In Illinois In 1966. Urbana: Illinois State Geological Survey, 1968.
Warning: These citations may not always be complete (especially for serials).