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Spirit leveling of the United States geological survey

Wilson, Herbert M.

A statement of the work of the field parties engaged in the topographic mapping of the United States Geological Survey, in the careful spirit-leveling conducted by them. (15000 w.)

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Spirit leveling of the United States geological survey

Wilson, Herbert M.

Abstract

A statement of the work of the field parties engaged in the topographic mapping of the United States Geological Survey, in the careful spirit-leveling conducted by them. (15000 w.)

Spirit leveling of the United States geological survey

Wilson, Herbert M.

Abstract

A statement of the work of the field parties engaged in the topographic mapping of the United States Geological Survey, in the careful spirit-leveling conducted by them. (15000 w.)