Matches in Library of Congress for { ?s ?p 1981-. }
- 81904223 date "1981-".
- 81904512 date "1981-".
- 81904560 date "1981-".
- 81904619 date "1981-".
- 81904623%2FSA date "1981-".
- 81905025%2FSA date "1981-".
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- 81905268 date "1981-".
- 81905280%2FSA%2Fr97 date "1981-".
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- 81905370 date "1981-".
- 81905506%2FSA%2Fr92 date "1981-".
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- 81930739%2FSA date "1981-".
- 81930963 date "1981-".
- 81931019 date "1981-".
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- 81941199%2FSA date "1981-".
- 81941615%2FSA date "1981-".
- 81961340 date "1981-".
- 81961425 date "1981-".
- 81961449 date "1981-".
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- 82082007 date "1981-".
- 82100159 date "1981-".
- 82100498 date "1981-".
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- 82118803 date "1981-".
- 82118820 date "1981-".
- 82118821 date "1981-".
- 82119079%2FMN%2Fr83 date "1981-".
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- 82119672 date "1981-".
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- 82119927 date "1981-".
- 82120098 date "1981-".
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- 82120345 date "1981-".
- 82120391 date "1981-".
- 82120654%2F%2Fr913 date "1981-".
- 82121063%2F%2Fr85 date "1981-".
- 82121186 date "1981-".
- 82121991 date "1981-".
- 82122077 date "1981-".