Original: Ad Libitum, 5 Pieces, Study Scor. Kazimierz Serocki. Ad Libitum, 5 Pieces, Study Scor composed by Kazimierz Serocki. Score.
Traduction: Ad Libitum, 5 pièces, étude Scor. Ad Libitum, 5 pièces, étude Scor composée par Kazimierz Serocki. Schott. 26 pages. Schott Music.