Matches in Library of Congress for { ?s ?p 1981. }
- 80084355 date "1981".
- 80084356 date "1981".
- 80084357 date "1981".
- 80084358 date "1981".
- 80084359 date "1981".
- 80084363 date "1981".
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- 80084410%2F%2Fr83 date "1981".
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- 80084452 date "1981".
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- 80084458 date "1981".
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- 80084509 date "1981".
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- 80084554 date "1981".
- 80084563 date "1981".
- 80084564 date "1981".
- 80084566 date "1981".
- 80084567 date "1981".
- 80084569 date "1981".
- 80084573%2F%2Fr89 date "1981".
- 80084576%2F%2Fr982 date "1981".