Matches in Library of Congress for { ?s ?p 1981. }
- 80023638 date "1981".
- 80023639 date "1981".
- 80023646 date "1981".
- 80023649 date "1981".
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- 80023881 date "1981".
- 80023883 date "1981".
- 80023884 date "1981".
- 80023886 date "1981".