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1 + 1
volume 2: 20 piano studies for beginners
1 + 1
twelve easy duets for two recorders
1 + 1
volume 2: 10 piano pieces on well-known songs
12 x 12
fugues for piano
20 duos faciles sur des airs de folklore
20 easy folksong duets (pour 2 flûtes à bec soprano)