Matches in Library of Congress for { ?s ?p 1981.. }
- 81152423%2F%2Fr91 created "1981.".
- 81152430 created "1981.".
- 81152441%2F%2Fr92 created "1981.".
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- 81152495 created "1981.".
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- 81152648%2F%2Fr92 created "1981.".
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- 81152761%2F%2Fr91 created "1981.".
- 81152770%2F%2Fr92 created "1981.".
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- 81152991%2F%2Fr91 created "1981.".
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- 81153041 created "1981.".
- 81153052 created "1981.".
- 81153060 created "1981.".
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- 81153081%2F%2Fr82 created "1981.".
- 81153083 created "1981.".
- 81153087 created "1981.".
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- 81153095 created "1981.".
- 81153098 created "1981.".
- 81153099 created "1981.".
- 81153106 created "1981.".
- 81153110 created "1981.".
- 81153112 created "1981.".
- 81153114 created "1981.".