Matches in Library of Congress for { ?s ?p 1981. }
- 80014761 date "1981".
- 80014763 date "1981".
- 80014777 date "1981".
- 80014778 date "1981".
- 80014795%2F%2Fr93 date "1981".
- 80014796 date "1981".
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- 80014862 date "1981".
- 80014863 date "1981".
- 80014865%2F%2Fr912 date "1981".
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- 80015223 date "1981".
- 80015231 date "1981".
- 80015233 date "1981".
- 80015235 date "1981".
- 80015236 date "1981".
- 80015241%2F%2Fr84 date "1981".