http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
T 30.927 -- SPAIN, Barry: -- Ordinary Differential Equations.- London [usw.]:van Nostrand (1969).IX,142 S. 8° -- (The new University Mathematics Series.) -- 1970: 4467 /gb. -- U: