Matches in Library of Congress for { ?s ?p 1981. }
- 80054386 date "1981".
- 80054387 date "1981".
- 80054388 date "1981".
- 80054389 date "1981".
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- 80054562 date "1981".
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- 80054565 date "1981".
- 80054566 date "1981".