An intensive survey of the Elkhorn Creek Basin, 1985.
APA Citation
Illinois. Division of Water Pollution Control., Illinois. Environmental Protection Agency. (1988). An intensive survey of the Elkhorn Creek Basin, 1985. [Springfield, Ill.]: Illinois Environmental Protection Agency, Division of Water Pollution Control.
MLA Citation
Illinois. Division of Water Pollution Control, and Illinois. Environmental Protection Agency. An Intensive Survey of the Elkhorn Creek Basin, 1985. [Springfield, Ill.]: Illinois Environmental Protection Agency, Division of Water Pollution Control, 1988.
Warning: These citations may not always be complete (especially for serials).