Matches in Library of Congress for { ?s ?p 1981-. }
- 89965984 dateCopyrighted "1981-".
- 89981928 dateCopyrighted "1981-".
- 90116325 dateCopyrighted "1981-".
- 90117622%2FMN dateCopyrighted "1981-".
- 90167847 dateCopyrighted "1981-".
- 90179826 dateCopyrighted "1981-".
- 90193821 dateCopyrighted "1981-".
- 90205682 dateCopyrighted "1981-".
- 90212580%2F%2Fr96 dateCopyrighted "1981-".
- 90828105 dateCopyrighted "1981-".
- 90908411 dateCopyrighted "1981-".
- 91108959 dateCopyrighted "1981-".
- 91181858%2FNE dateCopyrighted "1981-".
- 91200379 dateCopyrighted "1981-".
- 91220019%2F%2Fr982 dateCopyrighted "1981-".
- 91220607 dateCopyrighted "1981-".
- 92101188 dateCopyrighted "1981-".
- 92102255 dateCopyrighted "1981-".
- 92901706 dateCopyrighted "1981-".
- 92915676 dateCopyrighted "1981-".
- 92943063 dateCopyrighted "1981-".
- 93905155 dateCopyrighted "1981-".
- 93969634 dateCopyrighted "1981-".
- 94216265 dateCopyrighted "1981-".
- 94943269 dateCopyrighted "1981-".
- 94967472%2FNE dateCopyrighted "1981-".
- 95153216%2FNE dateCopyrighted "1981-".
- 96176597 dateCopyrighted "1981-".
- 97107582 dateCopyrighted "1981-".
- 97202179%2F%2Fr97 dateCopyrighted "1981-".
- 98130895 dateCopyrighted "1981-".
- 99168146 dateCopyrighted "1981-".
- 99511245 dateCopyrighted "1981-".
- 00370118 issued "1981-".
- 00509764 issued "1981-".
- 2001395570 issued "1981-".
- 2004554430 issued "1981-".
- 2006423061 issued "1981-".
- 2007343084 issued "1981-".
- 2007555231 issued "1981-".
- 2010341340 issued "1981-".
- 71909151 issued "1981-".
- 79040965 issued "1981-".
- 79041480%2F%2Fr89 issued "1981-".
- 79042663 issued "1981-".
- 80001878 issued "1981-".
- 80002110 issued "1981-".
- 80008614 issued "1981-".
- 80013417 issued "1981-".
- 80018972%2F%2Fr883 issued "1981-".
- 80019936 issued "1981-".
- 80025511 issued "1981-".
- 80025672%2F%2Fr942 issued "1981-".
- 80027272%2F%2Fr903 issued "1981-".
- 80027543 issued "1981-".
- 80028882%2F%2Fr853 issued "1981-".
- 80028970%2F%2Fr85 issued "1981-".
- 80036748 issued "1981-".
- 80036752 issued "1981-".
- 80039562%2F%2Fr963 issued "1981-".
- 80041494 issued "1981-".
- 80041987 issued "1981-".
- 80042009 issued "1981-".
- 80053799%2F%2Fr98 issued "1981-".
- 80069419 issued "1981-".
- 80070545 issued "1981-".
- 80070546%2F%2Fr883 issued "1981-".
- 80070911 issued "1981-".
- 80084935%2F%2Fr91 issued "1981-".
- 80084968 issued "1981-".
- 80085516%2F%2Fr84 issued "1981-".
- 80155371 issued "1981-".
- 81000309%2F%2Fr982 issued "1981-".
- 81001006 issued "1981-".
- 81002392 issued "1981-".
- 81002980 issued "1981-".
- 81003695 issued "1981-".
- 81003857 issued "1981-".
- 81005634 issued "1981-".
- 81006111%2F%2Fr85 issued "1981-".
- 81006130 issued "1981-".
- 81006179 issued "1981-".
- 81007912 issued "1981-".
- 81008131%2F%2Fr92 issued "1981-".
- 81009534 issued "1981-".
- 81010090 issued "1981-".
- 81010199%2F%2Fr902 issued "1981-".
- 81010770 issued "1981-".
- 81010962%2F%2Fr852 issued "1981-".
- 81011181 issued "1981-".
- 81011275 issued "1981-".
- 81011283 issued "1981-".
- 81012479 issued "1981-".
- 81012521 issued "1981-".
- 81013373%2F%2Fr923 issued "1981-".
- 81013485%2F%2Fr92 issued "1981-".
- 81014536%2F%2Fr88 issued "1981-".
- 81014843 issued "1981-".
- 81015532 issued "1981-".
- 81017043 issued "1981-".