Columbia subject headings:
International Congress of the History of Science and Technology (2nd : 1931 : London, England)
Science--History.
Harvard subject headings:
International Congress of the History of Science and Technology (2nd : 1931 : London, England)
Philosophy and science.
Science--History
Princeton subject headings:
International Congress of the History of Science and Technology (2nd : 1931 : London, England)
Science--Social aspects.