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17th century

additional conservation and environment cartographic items

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Add record depth reached by Navy divers. Lieut. A.R. Benhke, Medical Corps, U.S.N., uses the van slyke gas analysis apparatus in extracting gases from body fluids following the dives. Analysis of body fluid is made immediately after each diver comes from the water, 8/9/38

Add record depth reached by Navy divers. Lieut. A.R. Benhke, Medical C...

Public domain photograph of laboratory, scientist, free to use, no copyright restrictions image - Picryl description

[Eight-foot mercury barometer and water pumping demonstration from four-story house proving law that height of fluids raised by suction or pressure varies inversely to its specific gravity]

[Eight-foot mercury barometer and water pumping demonstration from fou...

Public domain image of a historic building, 16th-17th century architecture, free to use, no copyright restrictions image - Picryl description.

Geopressured-geothermal energy in reservoir fluids of the northern Gulf of Mexico Basin /

Geopressured-geothermal energy in reservoir fluids of the northern Gul...

"Map 3 of U.S. Geological Survey Circular 790, Assessment of geothermal resources of the United States, 1978." Includes notes. Available also through the Library of Congress Web site as a raster image. DRM