Geyl, Pieter, 1887-1966

Boston : Beacon Press, 1949.

Conference on Science, Philosophy and Religion in Their Relation to the Democratic Way of Life (13th : 1952 : Columbia University), author

New York : Conference on Science, Philosophy and Religion in their Relation to the Democratic Way of Life, Inc., 1954.

Spengler, Oswald, 1880-1936

New York : Alfred A. Knopf, 1932.

Spengler, Oswald, 1880-1936

Berlin : Georg Stilke, 1921.

Conference on Science, Philosophy and Religion in Their Relation to the Democratic Way of Life (10th, Columbia University, 1949), author

New York : Conference on Science, Philosophy and Religion in their Relation to the Democratic Way of Life, Inc., 1950.

Tönnies, Ferdinand, 1855-1936

Leipzig : Hans Buske Verlag, 1935.

LSF- BEINECKE >> Gray Social Thought 2672

Bury, J. B. (John Bagnell), 1861-1927

New York, The Macmillan company, 1932.

Conference on Science, Philosophy and Religion in Their Relation to the Democratic Way of Life, 7th, University of Chicago, 1946

New York : Conference on Science, Philosophy and Religion in their Relation to the Democratic Way of Life, Inc., 1947.

Elias, Norbert, 1897-1990

Basel : Haus zum Falken, 1939.