Matches in Library of Congress for { ?s ?p 1981. }
- 80066479 date "1981".
- 80066493 date "1981".
- 80066495 date "1981".
- 80066497 date "1981".
- 80066498 date "1981".
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- 80067351 date "1981".
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- 80067393 date "1981".