Matches in Library of Congress for { ?s ?p 1981. }
- 80018125 date "1981".
- 80018127 date "1981".
- 80018128%2F%2Fr89 date "1981".
- 80018131 date "1981".
- 80018132 date "1981".
- 80018134 date "1981".
- 80018136 date "1981".
- 80018137 date "1981".
- 80018139%2F%2Fr873 date "1981".
- 80018141 date "1981".
- 80018143 date "1981".
- 80018147 date "1981".
- 80018150 date "1981".
- 80018151 date "1981".
- 80018154%2F%2Fr96 date "1981".
- 80018158%2F%2Fr85 date "1981".
- 80018159%2F%2Fr85 date "1981".
- 80018173 date "1981".
- 80018178 date "1981".
- 80018179%2F%2Fr83 date "1981".
- 80018185 date "1981".
- 80018188 date "1981".
- 80018190 date "1981".
- 80018194 date "1981".
- 80018196 date "1981".
- 80018208 date "1981".
- 80018211%2F%2Fr83 date "1981".
- 80018222%2F%2Fr842 date "1981".
- 80018226 date "1981".
- 80018229 date "1981".
- 80018230 date "1981".
- 80018232%2F%2Fr833 date "1981".
- 80018233 date "1981".
- 80018238 date "1981".
- 80018239 date "1981".
- 80018242 date "1981".
- 80018244%2F%2Fr88 date "1981".
- 80018251%2F%2Fr88 date "1981".
- 80018253 date "1981".
- 80018254 date "1981".
- 80018255 date "1981".
- 80018257 date "1981".
- 80018258%2F%2Fr932 date "1981".
- 80018259 date "1981".
- 80018262 date "1981".
- 80018263 date "1981".
- 80018266 date "1981".
- 80018273%2F%2Fr963 date "1981".
- 80018277%2F%2Fr85 date "1981".
- 80018282 date "1981".
- 80018287 date "1981".
- 80018289 date "1981".
- 80018294 date "1981".
- 80018295 date "1981".
- 80018297 date "1981".
- 80018298 date "1981".
- 80018299%2F%2Fr902 date "1981".
- 80018301 date "1981".
- 80018303 date "1981".
- 80018309 date "1981".
- 80018311%2F%2Fr83 date "1981".
- 80018313 date "1981".
- 80018314%2F%2Fr89 date "1981".
- 80018316%2F%2Fr862 date "1981".
- 80018320%2F%2Fr922 date "1981".
- 80018322 date "1981".
- 80018324 date "1981".
- 80018326 date "1981".
- 80018327 date "1981".
- 80018332 date "1981".
- 80018333 date "1981".
- 80018334%2F%2Fr97 date "1981".
- 80018338 date "1981".
- 80018340%2F%2Fr85 date "1981".
- 80018349 date "1981".
- 80018353 date "1981".
- 80018357 date "1981".
- 80018359 date "1981".
- 80018362%2F%2Fr84 date "1981".
- 80018380 date "1981".
- 80018384 date "1981".
- 80018390 date "1981".
- 80018393 date "1981".
- 80018394%2F%2Fr85 date "1981".
- 80018395 date "1981".
- 80018403 date "1981".
- 80018404%2F%2Fr83 date "1981".
- 80018406 date "1981".
- 80018410 date "1981".
- 80018413 date "1981".
- 80018420%2FMN date "1981".
- 80018421 date "1981".
- 80018424 date "1981".
- 80018426 date "1981".
- 80018428%2F%2Fr85 date "1981".
- 80018431%2F%2Fr89 date "1981".
- 80018432 date "1981".
- 80018433 date "1981".
- 80018437 date "1981".
- 80018441 date "1981".