http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
1 audio disc : 33 1/3 rpm, microgroove, stereo ; 12 in.
Ballade no. 1 in G minor, op. 23 -- Ballade no. 2 in F, op. 38 -- Ballade no. 3 in A-flat, op. 47 -- Ballade no. 4 in F minor, op. 52.
Program notes by Irving Kolodin on slipcase.