Matches in Library of Congress for { ?s ?p 1981. }
- 80019333 date "1981".
- 80019334%2F%2Fr82 date "1981".
- 80019339%2F%2Fr82 date "1981".
- 80019341%2F%2Fr91 date "1981".
- 80019342 date "1981".
- 80019344%2F%2Fr88 date "1981".
- 80019345 date "1981".
- 80019351 date "1981".
- 80019352 date "1981".
- 80019355%2F%2Fr922 date "1981".
- 80019358 date "1981".
- 80019359%2F%2Fr90 date "1981".
- 80019361%2F%2Fr943 date "1981".
- 80019362 date "1981".
- 80019363%2F%2Fr942 date "1981".
- 80019365 date "1981".
- 80019366 date "1981".
- 80019370 date "1981".
- 80019371 date "1981".
- 80019374 date "1981".
- 80019375 date "1981".
- 80019377 date "1981".
- 80019378%2F%2Fr82 date "1981".
- 80019379%2F%2Fr91 date "1981".
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- 80019383%2F%2Fr93 date "1981".
- 80019384%2F%2Fr83 date "1981".
- 80019388%2F%2Fr873 date "1981".
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- 80019396 date "1981".
- 80019403 date "1981".
- 80019405 date "1981".
- 80019407%2F%2Fr90 date "1981".
- 80019410 date "1981".
- 80019411 date "1981".
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- 80019434 date "1981".
- 80019435%2F%2Fr87 date "1981".
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- 80019441%2F%2Fr95 date "1981".
- 80019442 date "1981".
- 80019444%2F%2Fr87 date "1981".
- 80019445%2F%2Fr843 date "1981".
- 80019446%2F%2Fr89 date "1981".
- 80019448%2F%2Fr82 date "1981".
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- 80019455%2F%2Fr932 date "1981".
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- 80019463%2F%2Fr92 date "1981".
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- 80019472%2F%2Fr89 date "1981".
- 80019479%2F%2Fr84 date "1981".
- 80019481 date "1981".
- 80019485 date "1981".
- 80019487 date "1981".
- 80019489%2F%2Fr822 date "1981".
- 80019491 date "1981".
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- 80019499 date "1981".
- 80019501 date "1981".
- 80019502%2F%2Fr83 date "1981".
- 80019503 date "1981".
- 80019506%2F%2Fr965 date "1981".
- 80019510 date "1981".
- 80019511 date "1981".
- 80019513 date "1981".
- 80019517 date "1981".
- 80019518 date "1981".
- 80019522 date "1981".
- 80019524 date "1981".
- 80019526 date "1981".
- 80019533 date "1981".
- 80019534%2F%2Fr91 date "1981".
- 80019536 date "1981".
- 80019541%2F%2Fr97 date "1981".
- 80019546 date "1981".
- 80019547%2F%2Fr87 date "1981".
- 80019548 date "1981".
- 80019551 date "1981".
- 80019553 date "1981".
- 80019559%2F%2Fr88 date "1981".
- 80019566 date "1981".
- 80019567 date "1981".
- 80019570 date "1981".
- 80019571%2F%2Fr92 date "1981".
- 80019574 date "1981".
- 80019575 date "1981".
- 80019576%2F%2Fr89 date "1981".
- 80019581 date "1981".