* 16 August 1852, † 17 June 1918
Johann Heinrich Graf was born on 16 August 1852 in Töss, Zürich, Switzerland. Johann Heinrich Graf died on 17 June 1918 in Bern, Switzerland.
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| created: 2016-08-26 21:54:32 | modified: 2016-08-26 21:54:32 | by: bookofproofs | references: [6909]
[6909] O’Connor, John J; Robertson, Edmund F: “MacTutor History of Mathematics Archive”, http://www-history.mcs.st-and.ac.uk/, 2014
