Columbia subject headings:
Civil engineering--Environmental aspects--United States--Bibliography.
Environmental protection--United States--History--Bibliography.
United States. Army. Corps of Engineers--Bibliography.
Harvard subject headings:
Civil engineering--Environmental aspects--United States--Bibliography.
Environmental protection--United States--History--Bibliography.
United States. Army. Corps of Engineers--Bibliography.
Princeton subject headings:
Civil engineering--Environmental aspects--United States--Bibliography.
Environmental protection--United States--History--Bibliography.
United States. Army. Corps of Engineers--Bibliography.