Leibniz Society of North America:
30th Annual Essay Competition (2012)

The Houston Circle for the Study of
Early Modern Philosophy
Gregory Brown
513 Agnes Arnold Hall
Department of Philosophy
University of Houston
Houston, TX 77204-3004

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40 Pfennig
Deutsches Reich (1926)

Leibniz Postage


24 Pfennig
Deutsche Demokratische Republik(1950)


30 Pfennig
Bundesrepublik Deutschland (1966)


135 Lei
Romania (1966)


60 Pfennig
Bundesrepublik Deutschland (1980)


100 Pfennig
Bundesrepublik Deutschland (1996)


10 Leke
Albania (1996)