On the occasion of the l00th anniversary of his death Poland issued in 2006 a postal stationary of Jan Dzierzon. Interesting on this card is also the word parthenogenesis left from the portret of Dzierzon.
And on the left part of the card is pictured the Dzierzon hive.
by Jan de Crom
taken from "The Postal Bee" 4/2007
Contact Group Bee Philately