Alexander Henderson contributed to which compendium, written by about 100 full-time editors and 4,000 contributors at current?
Encyclopædia Britannica The Encyclopædia Britannica (Latin for "British Encyclopaedia"), published by Encyclopædia Britannica, Inc., is a general knowledge English-language encyclopaedia. It is written by about 100 full-time editors and more than 4,000 contributors, who have included 110 Nobel Prize winners and five American presidents. The 2010 version of the 15th edition, which spans 32 volumes and 32,640 pages, was the last printed edition; digital content and distribution has continued since then.
William MacGregor Henderson Sir William MacGregor Henderson FRS FRSE PZS MRCVS (17 July 1913 - 29 November 2000) was a Scottish veterinary expert on foot and mouth disease. He was also President of the Zoological Society of London, 1984–1989. He was in charge of controlling foot and mouth disease in South America from 1957 to 1966. In his life he was generally called Gregor Henderson.