4 [i.e. Quatre] impromptus, piano 2 ms. Op. 90.
Subtitle: Rev. K. Vinkĺ́at.
Series: URPOS, č. 149
Publisher: F.A. Urbánek
Published: 1947
Place of publication: Praha
Language: cze
Number of pages: 35
Subjects: Piano music
Work titles: Impromptus, piano, D. 899