Birth centenary of Sir Harold Ridley (10th July 1906 - 25th May 2001).
Basak
Samar K
SK
D002387:Cataract Extraction / Q000266:history*; D049673:History, 20th Century; D049674:History, 21st Century; D006801:Humans; D007910:Lenses, Intraocular / Q000266:history*; D009885:Ophthalmology / Q000266:history*; D010678:Philately / Q000266:history*; D006113:United Kingdom