(c) Copyright Note | Paul Leo Butzer (1928 - unknown) * 15 April 1928 Paul Leo Butzer was born on 15 April 1928 in Mülheim an der Ruhr, Ruhr, Germany. |
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| created: 2016-08-26 21:54:40 | modified: 2016-08-26 21:54:40 | 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
