Matches in Library of Congress for { ?s ?p 20uu. }
- 2013334227 issued "20uu".
- 2013334555 issued "20uu".
- 2013334563 issued "20uu".
- 2013334773 issued "20uu".
- 2013342434 issued "20uu".
- 2013375600 issued "20uu".
- 2013383583 issued "20uu".
- 2013385530 issued "20uu".
- 2013395306 issued "20uu".
- 2013410080 issued "20uu".
- 2013410081 issued "20uu".
- 2013410082 issued "20uu".
- 2013410084 issued "20uu".
- 2013421647 issued "20uu".