Matches in Library of Congress for { ?s ?p 1981. }
- 80001124 date "1981".
- 80001125 date "1981".
- 80001127 date "1981".
- 80001192 date "1981".
- 80001196 date "1981".
- 80001197 date "1981".
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- 80001207%2F%2Fr92 date "1981".
- 80001208 date "1981".
- 80001210 date "1981".
- 80001212 date "1981".
- 80001213 date "1981".
- 80001215 date "1981".
- 80001216%2F%2Fr83 date "1981".
- 80001217 date "1981".
- 80001218 date "1981".
- 80001220 date "1981".
- 80001221%2F%2Fr84 date "1981".
- 80001223%2F%2Fr94 date "1981".
- 80001224 date "1981".
- 80001226 date "1981".
- 80001227 date "1981".
- 80001229 date "1981".
- 80001230 date "1981".
- 80001232 date "1981".
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- 80001241 date "1981".
- 80001242 date "1981".
- 80001245 date "1981".
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- 80001248%2F%2Fr822 date "1981".
- 80001249 date "1981".
- 80001250 date "1981".
- 80001251 date "1981".
- 80001253%2F%2Fr82 date "1981".
- 80001254%2F%2Fr86 date "1981".
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- 80001256 date "1981".
- 80001257 date "1981".
- 80001259 date "1981".
- 80001260 date "1981".
- 80001261%2F%2Fr91 date "1981".
- 80001262 date "1981".
- 80001263 date "1981".
- 80001264 date "1981".
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- 80001267 date "1981".
- 80001268 date "1981".
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- 80001274 date "1981".
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- 80001277 date "1981".
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- 80001288 date "1981".
- 80001289 date "1981".
- 80001290 date "1981".
- 80001292 date "1981".
- 80001294 date "1981".
- 80001295%2F%2Fr97 date "1981".
- 80001296%2F%2Fr86 date "1981".
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- 80001299%2F%2Fr942 date "1981".
- 80001302 date "1981".
- 80001303 date "1981".
- 80001304%2F%2Fr84 date "1981".
- 80001305 date "1981".
- 80001306 date "1981".
- 80001308 date "1981".
- 80001309%2F%2Fr87 date "1981".
- 80001310%2F%2Fr84 date "1981".
- 80001311 date "1981".
- 80001312 date "1981".
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- 80001323 date "1981".
- 80001324 date "1981".
- 80001326 date "1981".
- 80001327%2F%2Fr83 date "1981".
- 80001328 date "1981".
- 80001329%2F%2Fr85 date "1981".
- 80001330 date "1981".