http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
T 50.713 -- HOPKINS,H.J.: -- A Span of bridges.An illustrated histo= -- ry. - New York,Washington:Praeger (1970). -- 288 S.mit 124 Abb. 8° -- 1971: 300l /gb. -- U: