General Articles And News

British Association for the Advancement of Science

Br Med J 1955; 2 doi: https://doi.org/10.1136/bmj.2.4941.733 (Published 17 September 1955) Cite this as: Br Med J 1955;2:733

This is a PDF-only article. The first page of the PDF of this article appears below.

PDF extract preview

Sign in

Log in through your institution

Subscribe