Fisher, Ronald Aylmer, Sir, 1890-1962Araujo, F. Carvalho2011-11-222011-11-222011-11-21http://hdl.handle.net/2440/67557July 1939 - November 1940. 7 letters.enCorrespondence with Fernando Carvalho Araujo (Estacao Agronomica Nacional, Lisbon)Letter