@misc{_Nicolaus, address={Bethlehem, Pennsylvania}, howpublished={online}, publisher={Lehigh University}, language={eng}, type={katalog wystawy}, title={Nicolaus Copernicus, 1473-1973 : his revolutions and his revolution : catalogue of an exhibition of manuscripts and books in the Linderman Library, Lehigh University, Bethlehem, Pennsylvania : September-November 1973}, }