Matches in Library of Congress for { ?s ?p 1981.. }
- 81188690%2F%2Fr91 created "1981.".
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- 81188982%2F%2Fr92 created "1981.".
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- 81188986%2F%2Fr952 created "1981.".
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- 81189003%2F%2Fr97 created "1981.".
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- 81189010 created "1981.".
- 81189011 created "1981.".
- 81189012 created "1981.".
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- 81189015 created "1981.".
- 81189017 created "1981.".