BERDIAEV, N.A. Filosofiia svobodnogo dukha [The Philosophy of the Free Soul]. Paris, 1927. 2 vols., 8vo, original wrappers. Klepnina 23 -- BULGAKOV, S.N. O bogochelovechestve [On the Incarnation]. Paris, 1933-45. 3 vols, 8vo, original wrappers. 800 copies printed -- FRANK, S.L. Dukhovnye osnovy obshchestva [The Spiritual Foundations of Society]. Paris, 1930. 8vo, original wrappers; and 38 others by or about the authors. (44)