Catalogus

Six duets opus 59 : for two flutes ([19--?])

Six duets for two violins ([199-?])

Six duets for soprano and alto voices and piano (2003)

Six duets for two flutes : op. 137 : book 1 (NY : Belwin Mills, [cop. 195?])

Origineel

Six duets for two flutes : book 2 nos 4-6 ([cop. 197?])

Origineel

Sechs Duette für 2 Sopranblockflöten oder andere Melodie- instrumente gleicher Stimmlage (1978)

Six duets for flute & clarinet : (opus 27) (cop. 1962)

Six duets 2 fl or 2 vl. - Broekmans & Van Poppel

Six duets op. 75 : for two flutes : Nos. 1 - 3/K.V. Supplement 156

Origineel

Six duets for unaccompanied cellos (cop. 1959)

SIX DUETS 2 Flutes or 2 Violins (cop. 1965)