(1961). SOVIET MARXISM AND NATURAL SCIENCE 1917-1932. NEW YORK: COLUMBA UNVERSITY.
1961. SOVIET MARXISM AND NATURAL SCIENCE 1917-1932. NEW YORK: COLUMBA UNVERSITY.
SOVIET MARXISM AND NATURAL SCIENCE 1917-1932. NEW YORK: COLUMBA UNVERSITY. 1961.
