Matches in Library of Congress for { ?s ?p 1981. }
- 80070307%2F%2Fr97 date "1981".
- 80070308%2F%2Fr97 date "1981".
- 80070309 date "1981".
- 80070312 date "1981".
- 80070313 date "1981".
- 80070315 date "1981".
- 80070317 date "1981".
- 80070319 date "1981".
- 80070320 date "1981".
- 80070322 date "1981".
- 80070325 date "1981".
- 80070326 date "1981".
- 80070327 date "1981".
- 80070328 date "1981".
- 80070330 date "1981".
- 80070331 date "1981".
- 80070332 date "1981".
- 80070333 date "1981".
- 80070339 date "1981".
- 80070340 date "1981".
- 80070341%2F%2Fr892 date "1981".
- 80070342%2F%2Fr86 date "1981".
- 80070343 date "1981".
- 80070344 date "1981".
- 80070345%2F%2Fr86 date "1981".
- 80070346%2F%2Fr832 date "1981".
- 80070347%2F%2Fr83 date "1981".
- 80070348 date "1981".
- 80070350 date "1981".
- 80070351 date "1981".
- 80070352 date "1981".
- 80070353 date "1981".
- 80070356 date "1981".
- 80070357 date "1981".
- 80070360 date "1981".
- 80070361 date "1981".
- 80070364 date "1981".
- 80070367 date "1981".
- 80070369 date "1981".
- 80070370 date "1981".
- 80070372 date "1981".
- 80070373 date "1981".
- 80070374 date "1981".
- 80070377%2F%2Fr83 date "1981".
- 80070378 date "1981".
- 80070382 date "1981".
- 80070383%2F%2Fr92 date "1981".
- 80070384 date "1981".
- 80070385 date "1981".
- 80070386 date "1981".
- 80070387%2F%2Fr82 date "1981".
- 80070388 date "1981".
- 80070389 date "1981".
- 80070392 date "1981".
- 80070395 date "1981".
- 80070396 date "1981".
- 80070401 date "1981".
- 80070406 date "1981".
- 80070412 date "1981".
- 80070414 date "1981".
- 80070417 date "1981".
- 80070422 date "1981".
- 80070423 date "1981".
- 80070436 date "1981".
- 80070437 date "1981".
- 80070438%2F%2Fr91 date "1981".
- 80070441 date "1981".
- 80070442 date "1981".
- 80070443 date "1981".
- 80070445%2F%2Fr953 date "1981".
- 80070446 date "1981".
- 80070447 date "1981".
- 80070448%2F%2Fr892 date "1981".
- 80070449%2F%2Fr84 date "1981".
- 80070452 date "1981".
- 80070461 date "1981".
- 80070462 date "1981".
- 80070474%2F%2Fr88 date "1981".
- 80070481 date "1981".
- 80070492 date "1981".
- 80070495 date "1981".
- 80070499 date "1981".
- 80070502 date "1981".
- 80070504 date "1981".
- 80070506 date "1981".
- 80070508 date "1981".
- 80070509 date "1981".
- 80070510 date "1981".
- 80070512 date "1981".
- 80070519 date "1981".
- 80070520 date "1981".
- 80070521 date "1981".
- 80070522%2F%2Fr83 date "1981".
- 80070524 date "1981".
- 80070525 date "1981".
- 80070526 date "1981".
- 80070530 date "1981".
- 80070533 date "1981".
- 80070535 date "1981".
- 80070536 date "1981".