Matches in Library of Congress for { ?s ?p 1981. }
- 80027778%2F%2Fr86 date "1981".
- 80027779 date "1981".
- 80027780 date "1981".
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- 80027782%2F%2Fr84 date "1981".
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- 80027839%2F%2Fr882 date "1981".
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- 80027853%2F%2Fr85 date "1981".
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- 80027886 date "1981".
- 80027887 date "1981".
- 80027888 date "1981".
- 80027889 date "1981".
- 80027890%2F%2Fr88 date "1981".
- 80027893 date "1981".
- 80027895%2F%2Fr85 date "1981".
- 80027898%2F%2Fr882 date "1981".