Matches in Library of Congress for { ?s ?p 1981. }
- 80070003 date "1981".
- 80070010 date "1981".
- 80070011 date "1981".
- 80070012 date "1981".
- 80070017 date "1981".
- 80070020 date "1981".
- 80070023 date "1981".
- 80070031 date "1981".
- 80070035%2F%2Fr84 date "1981".
- 80070038 date "1981".
- 80070040%2F%2Fr81 date "1981".
- 80070042 date "1981".
- 80070048 date "1981".
- 80070050 date "1981".
- 80070052 date "1981".
- 80070071%2F%2Fr90 date "1981".
- 80070072%2F%2Fr82 date "1981".
- 80070076%2F%2Fr84 date "1981".
- 80070077 date "1981".
- 80070081 date "1981".
- 80070083 date "1981".
- 80070084 date "1981".
- 80070085 date "1981".
- 80070087 date "1981".
- 80070088 date "1981".
- 80070094 date "1981".
- 80070095 date "1981".
- 80070096%2F%2Fr943 date "1981".
- 80070097%2F%2Fr942 date "1981".
- 80070101 date "1981".
- 80070115 date "1981".
- 80070116%2F%2Fr94 date "1981".
- 80070117 date "1981".
- 80070118%2F%2Fr88 date "1981".
- 80070119 date "1981".
- 80070126 date "1981".
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- 80070141 date "1981".
- 80070142 date "1981".
- 80070144 date "1981".
- 80070152 date "1981".
- 80070153 date "1981".
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- 80070155 date "1981".
- 80070156%2F%2Fr933 date "1981".
- 80070159 date "1981".
- 80070161 date "1981".
- 80070164 date "1981".
- 80070168%2F%2Fr88 date "1981".
- 80070169 date "1981".
- 80070170 date "1981".
- 80070186 date "1981".
- 80070191 date "1981".
- 80070203%2F%2Fr82 date "1981".
- 80070205%2F%2Fr86 date "1981".
- 80070208%2F%2Fr87 date "1981".
- 80070210 date "1981".
- 80070211 date "1981".
- 80070212 date "1981".
- 80070213 date "1981".
- 80070215 date "1981".
- 80070216 date "1981".
- 80070217 date "1981".
- 80070218 date "1981".
- 80070219%2F%2Fr95 date "1981".
- 80070220 date "1981".
- 80070222%2F%2Fr94 date "1981".
- 80070223 date "1981".
- 80070224 date "1981".
- 80070225 date "1981".
- 80070226 date "1981".
- 80070227%2F%2Fr82 date "1981".
- 80070228 date "1981".
- 80070230 date "1981".
- 80070231 date "1981".
- 80070234%2F%2Fr87 date "1981".
- 80070238 date "1981".
- 80070240 date "1981".
- 80070243 date "1981".
- 80070246 date "1981".
- 80070251 date "1981".
- 80070260%2F%2Fr832 date "1981".
- 80070262 date "1981".
- 80070264 date "1981".
- 80070265 date "1981".
- 80070267%2F%2Fr84 date "1981".
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- 80070270 date "1981".
- 80070272 date "1981".
- 80070276%2F%2Fr83 date "1981".
- 80070280 date "1981".
- 80070281 date "1981".
- 80070283%2F%2Fr90 date "1981".
- 80070286 date "1981".
- 80070291%2F%2Fr953 date "1981".
- 80070294%2F%2Fr92 date "1981".
- 80070299 date "1981".
- 80070300%2F%2Fr902 date "1981".
- 80070301%2F%2Fr82 date "1981".
- 80070306 date "1981".