Matches in Library of Congress for { ?s ?p 1981. }
- 80006042%2F%2Fr964 date "1981".
- 80006043%2F%2Fr84 date "1981".
- 80006044 date "1981".
- 80006045 date "1981".
- 80006046 date "1981".
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- 80006068 date "1981".
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- 80006170 date "1981".
- 80006171 date "1981".
- 80006173 date "1981".
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- 80006199%2F%2Fr953 date "1981".
- 80006202 date "1981".
- 80006206 date "1981".
- 80006208 date "1981".
- 80006210 date "1981".