Georges Ivanovitch Gurdjieff, Thomas de Hartmann ; edited by Linda Daniel-Spitz, Charles Ketcham, and Laurence Rosenthal ; archives and research, Thomas C. Daly
Schottc2005Definitive edMusic for the piano = Œuvres pour piano / Georges Ivanovitch Gurdjieff, Thomas de Hartmann
v. 4
Georges Ivanovitch Gurdjieff, Thomas de Hartmann ; edited by Linda Daniel-Spitz, Charles Ketcham, and Laurence Rosenthal ; archives and research, Thomas C. Daly
Schottc2002Definitive edMusic for the piano = Œuvres pour piano / Georges Ivanovitch Gurdjieff, Thomas de Hartmann
v. 3
Georges Ivanovitch Gurdjieff, Thomas de Hartmann ; edited by Linda Daniel-Spitz, Charles Ketcham, and Laurence Rosenthal ; archives and research, Thomas C. Daly
Schottc1996Definitive edMusic for the piano = Œuvres pour piano / Georges Ivanovitch Gurdjieff, Thomas de Hartmann
v. 2
Georges Ivanovitch Gurdjieff, Thomas de Hartmann ; edited by Linda Daniel-Spitz, Charles Ketcham, and Laurence Rosenthal ; archives and research, Thomas C. Daly
Schottc1996Definitive edMusic for the piano = Œuvres pour piano / Georges Ivanovitch Gurdjieff, Thomas de Hartmann
v. 1