Research Article

Impressions of Cogwheel. The group secretary.

Br Med J 1972; 4 doi: https://doi.org/10.1136/bmj.4.5838.482 (Published 25 November 1972) Cite this as: Br Med J 1972;4:482

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

PDF extract preview