Matches in Library of Congress for { ?s ?p 020 19. }
- 87155976 subject "020 19".
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- 87162174 subject "020 19".
- 87181501 subject "020 19".
- 87403782 subject "020 19".
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- 88014679%2F%2Fr90 subject "020 19".
- 88020521%2F%2Fr91 subject "020 19".
- 88036876 subject "020 19".
- 88038476 subject "020 19".
- 88169065 subject "020 19".
- 89183552 subject "020 19".
- 90107441 subject "020 19".