Matches in Library of Congress for { ?s ?p 1981. }
- 80027286 date "1981".
- 80027287 date "1981".
- 80027288 date "1981".
- 80027289 date "1981".
- 80027291%2F%2Fr974 date "1981".
- 80027294 date "1981".
- 80027295 date "1981".
- 80027296 date "1981".
- 80027297%2F%2Fr962 date "1981".
- 80027298%2F%2Fr82 date "1981".
- 80027299 date "1981".
- 80027300%2F%2Fr852 date "1981".
- 80027301 date "1981".
- 80027302%2F%2Fr95 date "1981".
- 80027304 date "1981".
- 80027305%2F%2Fr962 date "1981".
- 80027306 date "1981".
- 80027307 date "1981".
- 80027308%2F%2Fr882 date "1981".
- 80027310 date "1981".
- 80027311%2F%2Fr893 date "1981".
- 80027312 date "1981".
- 80027313 date "1981".
- 80027314 date "1981".
- 80027315 date "1981".
- 80027316 date "1981".
- 80027317 date "1981".
- 80027318%2F%2Fr85 date "1981".
- 80027319%2F%2Fr892 date "1981".
- 80027320 date "1981".
- 80027322 date "1981".
- 80027323 date "1981".
- 80027324 date "1981".
- 80027325 date "1981".
- 80027326%2F%2Fr982 date "1981".
- 80027327 date "1981".
- 80027328 date "1981".
- 80027329%2F%2Fr953 date "1981".
- 80027330 date "1981".
- 80027332%2F%2Fr88 date "1981".
- 80027333%2F%2Fr933 date "1981".
- 80027334 date "1981".
- 80027335%2F%2Fr89 date "1981".
- 80027338 date "1981".
- 80027340%2F%2Fr92 date "1981".
- 80027341 date "1981".
- 80027342 date "1981".
- 80027344%2F%2Fr822 date "1981".
- 80027346 date "1981".
- 80027347 date "1981".
- 80027348 date "1981".
- 80027349%2F%2Fr932 date "1981".
- 80027350 date "1981".
- 80027351%2F%2Fr853 date "1981".
- 80027352 date "1981".
- 80027353%2F%2Fr873 date "1981".
- 80027357%2F%2Fr85 date "1981".
- 80027358 date "1981".
- 80027359 date "1981".
- 80027361%2F%2Fr83 date "1981".
- 80027362 date "1981".
- 80027363 date "1981".
- 80027364 date "1981".
- 80027365%2F%2Fr872 date "1981".
- 80027366 date "1981".
- 80027367 date "1981".
- 80027368 date "1981".
- 80027369 date "1981".
- 80027371%2F%2Fr98 date "1981".
- 80027372%2F%2Fr902 date "1981".
- 80027373 date "1981".
- 80027374 date "1981".
- 80027375 date "1981".
- 80027376 date "1981".
- 80027377 date "1981".
- 80027378 date "1981".
- 80027379 date "1981".
- 80027380 date "1981".
- 80027381 date "1981".
- 80027382 date "1981".
- 80027383 date "1981".
- 80027384 date "1981".
- 80027385 date "1981".
- 80027386 date "1981".
- 80027388%2F%2Fr842 date "1981".
- 80027389 date "1981".
- 80027390 date "1981".
- 80027391%2F%2Fr922 date "1981".
- 80027392 date "1981".
- 80027393%2F%2Fr97 date "1981".
- 80027395 date "1981".
- 80027396 date "1981".
- 80027397 date "1981".
- 80027398 date "1981".
- 80027399 date "1981".
- 80027400 date "1981".
- 80027401 date "1981".
- 80027402 date "1981".
- 80027403 date "1981".
- 80027404 date "1981".