Matches in Library of Congress for { ?s ?p 1981. }
- 80017052 date "1981".
- 80017053 date "1981".
- 80017060 date "1981".
- 80017061 date "1981".
- 80017089 date "1981".
- 80017102 date "1981".
- 80017103%2F%2Fr982 date "1981".
- 80017104 date "1981".
- 80017105%2F%2Fr91 date "1981".
- 80017107 date "1981".
- 80017118 date "1981".
- 80017119 date "1981".
- 80017124 date "1981".
- 80017136 date "1981".
- 80017140 date "1981".
- 80017143 date "1981".
- 80017147 date "1981".
- 80017148 date "1981".
- 80017152%2F%2Fr84 date "1981".
- 80017153 date "1981".
- 80017155 date "1981".
- 80017158 date "1981".
- 80017160 date "1981".
- 80017164 date "1981".
- 80017174 date "1981".
- 80017176 date "1981".
- 80017181%2F%2Fr87 date "1981".
- 80017182 date "1981".
- 80017184 date "1981".
- 80017192 date "1981".
- 80017197 date "1981".
- 80017201 date "1981".
- 80017206%2F%2Fr982 date "1981".
- 80017209 date "1981".
- 80017211%2F%2Fr85 date "1981".
- 80017214 date "1981".
- 80017224 date "1981".
- 80017226%2F%2Fr82 date "1981".
- 80017227 date "1981".
- 80017229 date "1981".
- 80017231%2F%2Fr872 date "1981".
- 80017232 date "1981".
- 80017235 date "1981".
- 80017237%2F%2Fr97 date "1981".
- 80017238 date "1981".
- 80017244 date "1981".
- 80017245%2F%2Fr84 date "1981".
- 80017252 date "1981".
- 80017257 date "1981".
- 80017263%2F%2Fr91 date "1981".
- 80017272%2F%2Fr872 date "1981".
- 80017275 date "1981".
- 80017279%2F%2Fr842 date "1981".
- 80017283%2F%2Fr82 date "1981".
- 80017291 date "1981".
- 80017301 date "1981".
- 80017302 date "1981".
- 80017313 date "1981".
- 80017314 date "1981".
- 80017316 date "1981".
- 80017318%2F%2Fr852 date "1981".
- 80017324 date "1981".
- 80017330%2F%2Fr942 date "1981".
- 80017336 date "1981".
- 80017339 date "1981".
- 80017341%2F%2Fr85 date "1981".
- 80017342 date "1981".
- 80017344 date "1981".
- 80017352%2F%2Fr84 date "1981".
- 80017353 date "1981".
- 80017357%2F%2Fr84 date "1981".
- 80017358 date "1981".
- 80017361%2F%2Fr972 date "1981".
- 80017362%2F%2Fr84 date "1981".
- 80017363 date "1981".
- 80017365%2F%2Fr93 date "1981".
- 80017368 date "1981".
- 80017373 date "1981".
- 80017374%2F%2Fr862 date "1981".
- 80017375%2F%2Fr923 date "1981".
- 80017380%2F%2Fr86 date "1981".
- 80017385 date "1981".
- 80017386 date "1981".
- 80017387 date "1981".
- 80017389%2F%2Fr84 date "1981".
- 80017390 date "1981".
- 80017392%2F%2Fr85 date "1981".
- 80017394 date "1981".
- 80017396%2F%2Fr85 date "1981".
- 80017398 date "1981".
- 80017399%2F%2Fr863 date "1981".
- 80017400 date "1981".
- 80017403%2F%2Fr852 date "1981".
- 80017404%2F%2Fr932 date "1981".
- 80017405 date "1981".
- 80017406%2F%2Fr862 date "1981".
- 80017413 date "1981".
- 80017417%2F%2Fr932 date "1981".
- 80017418 date "1981".
- 80017424 date "1981".