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Published by U. S. Geological Survey, Washington, D.C., 1970
Condition: very good. third printing. The mercury content in soil gas and in the atmosphere was measured in several mining districts to test the possibility that the mercury content in the atmosphere is higher over ore deposits than over barren ground. DH4. stapled binding, 10.25" Tall, 16 pages, cover embossed owner name, binding very good, pages clean.