Matches in Library of Congress for { ?s ?p 1981. }
- 80024441 date "1981".
- 80024442 date "1981".
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- 80024444 date "1981".
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- 80024581 date "1981".
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- 80024584 date "1981".
- 80024585 date "1981".
- 80024586%2F%2Fr973 date "1981".
- 80024587 date "1981".
- 80024588 date "1981".
- 80024589 date "1981".