http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Report of geological exploration of 40th parallel, made by order of Secretary of War according to Acts of Congress of Mar. 2, 1867 and Mar. 3, 1869
1 online resource (xiii+647+ovolumes pages)
Electronic reproduction. [Bethesda, Md.] : ProQuest, 2014. digital, PDF file. ProQuest U.S. Executive Branch Documents Mode of access: World Wide Web via ProQuest website.