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Dispositif pour ameliorer le son et le poids des accordeons et bandoneons ainsi que des guitares, violons, contrebasses a cordes, clarinettes, piano, flutes, batterie
Dispositif pour ameliorer le son et le poids des accordeons et bandoneons ainsi que des guitares, violons, contrebasses a cordes, clarinettes, piano, flutes, batterie
Procédé de préparation des n-chlorosulfonylamides, des n-chlorosulfonylsulfonamides et des chlorosulfonates d'aryle ainsi que des aminosulfonamides
Procédé de préparation des n-chlorosulfonylamides, des n-chlorosulfonylsulfonamides et des chlorosulfonates d'aryle ainsi que des aminosulfonamides