Intended for healthcare professionals

Correspondence

Positive v. Negative Prints

Br Med J 1952; 2 doi: https://doi.org/10.1136/bmj.2.4784.613-a (Published 13 September 1952) Cite this as: Br Med J 1952;2:613

This article has a correction. Please see:

PDF extract preview

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

Log in

Log in through your institution

Subscribe

* For online subscription