Matches in Library of Congress for { ?s ?p 1981. }
- 80028255 date "1981".
- 80028256 date "1981".
- 80028257 date "1981".
- 80028258 date "1981".
- 80028259 date "1981".
- 80028261 date "1981".
- 80028263%2F%2Fr972 date "1981".
- 80028264 date "1981".
- 80028265%2F%2Fr882 date "1981".
- 80028266 date "1981".
- 80028267%2F%2Fr923 date "1981".
- 80028268%2F%2Fr94 date "1981".
- 80028270%2F%2Fr84 date "1981".
- 80028271 date "1981".
- 80028273 date "1981".
- 80028274 date "1981".
- 80028275%2F%2Fr94 date "1981".
- 80028276 date "1981".
- 80028278%2F%2Fr85 date "1981".
- 80028279 date "1981".
- 80028280 date "1981".
- 80028281 date "1981".
- 80028282%2F%2Fr852 date "1981".
- 80028284 date "1981".
- 80028285%2F%2Fr97 date "1981".
- 80028287 date "1981".
- 80028288 date "1981".
- 80028289%2F%2Fr94 date "1981".
- 80028290 date "1981".
- 80028291 date "1981".
- 80028292 date "1981".
- 80028293 date "1981".
- 80028294 date "1981".
- 80028295 date "1981".
- 80028296 date "1981".
- 80028297 date "1981".
- 80028298%2F%2Fr94 date "1981".
- 80028299 date "1981".
- 80028300 date "1981".
- 80028302 date "1981".
- 80028304 date "1981".
- 80028305 date "1981".
- 80028306 date "1981".
- 80028307 date "1981".
- 80028308 date "1981".
- 80028309 date "1981".
- 80028310 date "1981".
- 80028311%2F%2Fr84 date "1981".
- 80028313 date "1981".
- 80028315%2F%2Fr952 date "1981".
- 80028317%2FMN date "1981".
- 80028318%2F%2Fr84 date "1981".
- 80028319%2F%2Fr84 date "1981".
- 80028321%2F%2Fr85 date "1981".
- 80028322 date "1981".
- 80028323 date "1981".
- 80028324 date "1981".
- 80028325%2F%2Fr902 date "1981".
- 80028326 date "1981".
- 80028327%2F%2Fr83 date "1981".
- 80028328 date "1981".
- 80028329 date "1981".
- 80028330 date "1981".
- 80028331 date "1981".
- 80028332 date "1981".
- 80028333 date "1981".
- 80028335%2F%2Fr85 date "1981".
- 80028336 date "1981".
- 80028338 date "1981".
- 80028339%2F%2Fr872 date "1981".
- 80028340 date "1981".
- 80028341%2F%2Fr82 date "1981".
- 80028342 date "1981".
- 80028344 date "1981".
- 80028345 date "1981".
- 80028347 date "1981".
- 80028348 date "1981".
- 80028350 date "1981".
- 80028351 date "1981".
- 80028352%2F%2Fr93 date "1981".
- 80028353%2F%2Fr82 date "1981".
- 80028354 date "1981".
- 80028355 date "1981".
- 80028356 date "1981".
- 80028357%2F%2Fr83 date "1981".
- 80028359 date "1981".
- 80028360%2F%2Fr94 date "1981".
- 80028361 date "1981".
- 80028362 date "1981".
- 80028363%2F%2Fr84 date "1981".
- 80028364 date "1981".
- 80028365%2F%2Fr922 date "1981".
- 80028366 date "1981".
- 80028367%2F%2Fr852 date "1981".
- 80028368 date "1981".
- 80028369%2F%2Fr912 date "1981".
- 80028370 date "1981".
- 80028371%2F%2Fr983 date "1981".
- 80028372 date "1981".
- 80028373 date "1981".