Matches in Library of Congress for { ?s ?p 1981. }
- 80021633 date "1981".
- 80021637 date "1981".
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- 80021821 date "1981".
- 80021822 date "1981".
- 80021823 date "1981".
- 80021824 date "1981".
- 80021825 date "1981".