Matches in Library of Congress for { ?s ?p 1981.. }
- 80021860%2F%2Fr87 created "1981.".
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- 80022484%2F%2Fr87 created "1981.".
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- 80022536%2F%2Fr85 created "1981.".
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- 80022545 created "1981.".
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- 80022559%2F%2Fr83 created "1981.".
- 80022574 created "1981.".