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Young, H. L.

Hydrogeology of the Cambrian-Ordovician aquifer system in the northern midwest, United States by H.L. Young ; with a section on ground-water quality by D.I. Siegel. - Washington U.S. G.P.O. 1992. - vii, 99 p. - U.S. Geological Survey professional paper 1405-B Regional aquifer-system analysis--northern midwest Regional aquifer-system analysis--northern midwest aquifer system .

Includes bibliographical references.

LCCN: 91030254

Subjects--Topical Terms:
Water, Under ground--Middle West.
Geology, Stratigraphic--Ordovician.
Geology, Stratigraphic--Cambrian.
Aquifers--Middle West.

LC Class. No.: GB1017 / .Y67 1992

Dewey Class. No.: 551.49/0977

Gov. Doc. Class. No.: I 19.16:1405-B