[Unknown fact in the life of Nicolaus Copernicus].
D001256:Astronomy / Q000266:history*; D005197:Famous Persons; D049668:History, 15th Century; D049669:History, 16th Century; D008433:Mathematics / Q000266:history; D008891:Military Science / Q000266:history; D011044:Poland
Nieznany fakt z zycia Mikołaja Kopernika.