Geological Survey (U.S.) & Clark, S. H. B. (1988). Metallogenic map of zinc, lead, and barium deposits and occurrences in Paleozoic sedimentary rocks, east-central United States, 1987. The Survey.
Chicago Style (17th ed.) CitationGeological Survey (U.S.) and Sandra H. B. Clark. Metallogenic Map of Zinc, Lead, and Barium Deposits and Occurrences in Paleozoic Sedimentary Rocks, East-central United States, 1987. Reston, Va.: The Survey, 1988.
MLA (9th ed.) CitationGeological Survey (U.S.) and Sandra H. B. Clark. Metallogenic Map of Zinc, Lead, and Barium Deposits and Occurrences in Paleozoic Sedimentary Rocks, East-central United States, 1987. The Survey, 1988.
Warning: These citations may not always be 100% accurate.