Gurdjieff and music : the Gurdjieff/de Hartmann piano music and its esoteric significance / by Johanna J.M. Petsche
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Gurdjieff and music : the Gurdjieff/de Hartmann piano music and its esoteric significance / by Johanna J.M. Petsche
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9789004284425
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Gurdjieff and music : the Gurdjieff/de Hartmann piano music and its esoteric significance
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Gurdjieff and music : the Gurd ...... ance / by Johanna J.M. Petsche