. "Vl\u00E1dn\u00ED na\u0159\u00EDzen\u00ED k proveden\u00ED z\u00E1kona o vyn\u00E1lezech a zlep\u0161ovac\u00EDch n\u00E1m\u011Btech"@cs . "10/1952\u00A0Sb." . .