Matches in Library of Congress for { ?s ?p 1981. }
- 80029672 date "1981".
- 80029673 date "1981".
- 80029674 date "1981".
- 80029675 date "1981".
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- 80036838 date "1981".
- 80036841 date "1981".
- 80036842 date "1981".
- 80036851 date "1981".