Matches in Library of Congress for { ?s ?p 1981. }
- 80025399 date "1981".
- 80025401%2F%2Fr93 date "1981".
- 80025402%2F%2Fr883 date "1981".
- 80025403 date "1981".
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- 80025411 date "1981".
- 80025412 date "1981".
- 80025413 date "1981".
- 80025415 date "1981".
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- 80025418 date "1981".
- 80025419 date "1981".
- 80025421 date "1981".
- 80025423 date "1981".
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- 80025425 date "1981".
- 80025426%2F%2Fr932 date "1981".
- 80025428%2FMN%2Fr902 date "1981".
- 80025430 date "1981".
- 80025431 date "1981".
- 80025432%2F%2Fr872 date "1981".
- 80025434 date "1981".
- 80025435%2F%2Fr942 date "1981".
- 80025436 date "1981".
- 80025437 date "1981".
- 80025440 date "1981".
- 80025443 date "1981".
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- 80025445 date "1981".
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- 80025450 date "1981".
- 80025453 date "1981".
- 80025454 date "1981".
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- 80025466 date "1981".
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- 80025468 date "1981".
- 80025470 date "1981".
- 80025471%2F%2Fr86 date "1981".
- 80025472 date "1981".
- 80025473 date "1981".
- 80025474 date "1981".
- 80025475%2F%2Fr87 date "1981".
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- 80025477%2F%2Fr89 date "1981".
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- 80025482 date "1981".
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- 80025489 date "1981".
- 80025490 date "1981".
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- 80025493 date "1981".
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- 80025499%2F%2Fr94 date "1981".
- 80025500 date "1981".
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- 80025504%2F%2Fr892 date "1981".
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- 80025506 date "1981".
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- 80025510 date "1981".
- 80025511 date "1981".
- 80025512 date "1981".
- 80025513 date "1981".
- 80025516 date "1981".
- 80025517 date "1981".
- 80025518 date "1981".
- 80025519 date "1981".
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- 80025522 date "1981".
- 80025523 date "1981".
- 80025524%2F%2Fr92 date "1981".
- 80025525 date "1981".
- 80025526 date "1981".
- 80025529 date "1981".
- 80025530 date "1981".
- 80025531 date "1981".
- 80025532%2F%2Fr82 date "1981".
- 80025533%2F%2Fr87 date "1981".
- 80025534 date "1981".
- 80025536 date "1981".