Petsche, Johanna J. M. (Personal Name)

Gurdjieff and music : the Gurdjieff/de Hartmann piano music and its esoteric significance / by Johanna J.M. Petsche.- Leiden : Brill, cop. 2015. - p. de couv.

Titulaire d'un doctorat de University of Sydney. Conférencière à University of Sydney (2015)