Matches in Library of Congress for { ?s ?p 1981. }
- 80028137 date "1981".
- 80028138%2F%2Fr82 date "1981".
- 80028139%2F%2Fr932 date "1981".
- 80028142 date "1981".
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- 80028227%2F%2Fr953 date "1981".
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- 80028230 date "1981".
- 80028231%2F%2Fr922 date "1981".
- 80028232 date "1981".
- 80028233%2F%2Fr872 date "1981".
- 80028234 date "1981".
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- 80028237%2F%2Fr93 date "1981".
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- 80028239 date "1981".
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- 80028244 date "1981".
- 80028245 date "1981".
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- 80028248 date "1981".
- 80028249 date "1981".
- 80028250 date "1981".
- 80028251%2F%2Fr923 date "1981".
- 80028252 date "1981".
- 80028254 date "1981".