Sulphur or sulfur? A tale of two spellingsBMJ 1988; 297 doi: https://doi.org/10.1136/bmj.297.6664.1697 (Published 24 December 1988) Cite this as: BMJ 1988;297:1697
Log in using your username and password
Log in through your institution
Register for a free trial to thebmj.com to receive unlimited access to all content on thebmj.com for 14 days.
Sign up for a free trial