Kaplan, Robert |
Hidden harmonies : the lives and times of the Pythagorean theorem / Robert Kaplan and Ellen Kaplan ; illustrations by Ellen Kaplan |
New York : Bloomsbury, 2011. |
Kaplan, Robert |
Zero : storia di una cifra / Robert Kaplan ; [traduzione di Stefano Galli e Carlo Capararo] |
[Milano] : Rizzoli, 1999. |