Subject
Communication of technical information
2
Aeronautics Safety measures International cooperation
1
Aeronautics, Commercial Law and legislation
1
Astronautics International cooperation
1
Cantatas, Secular (Men's voices)
1
Choruses, Secular (Mixed voices) with orchestra
1
Extradition
1
Judicial assistance
1
Katyn Massacre, Katynʹ, Russia, 1940
1
Kraków (Poland)
1
Military assistance, American
1
Monologues with music (Chorus with orchestra)
1
National security Law and legislation
1
Operas
1
Outer space Exploration Government policy
1
Outer space Research International cooperation
1
Research Law and legislation
1
Songs (Medium voice) with piano
1
Warsaw (Poland) History
1