Copy of Congress paper and copy of paper read to the Society on 17th February 1960

Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)

You can use this work for any purpose, as long as it is not primarily intended for or directed to commercial advantage or monetary compensation. You should also provide attribution to the original work, source and licence. Read more about this licence.

Credit

Copy of Congress paper and copy of paper read to the Society on 17th February 1960. Attribution-NonCommercial 4.0 International (CC BY-NC 4.0). Source: Wellcome Collection.