Matches in Library of Congress for { ?s ?p 1981. }
- 80025142 date "1981".
- 80025143%2F%2Fr94 date "1981".
- 80025144 date "1981".
- 80025145 date "1981".
- 80025147 date "1981".
- 80025149 date "1981".
- 80025150 date "1981".
- 80025151 date "1981".
- 80025152 date "1981".
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- 80025159 date "1981".
- 80025162 date "1981".
- 80025163%2F%2Fr975 date "1981".
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- 80025166 date "1981".
- 80025167 date "1981".
- 80025168%2F%2Fr932 date "1981".
- 80025169 date "1981".
- 80025170%2F%2Fr943 date "1981".
- 80025171 date "1981".
- 80025172 date "1981".
- 80025173 date "1981".
- 80025175%2F%2Fr97 date "1981".
- 80025176%2F%2Fr89 date "1981".
- 80025177 date "1981".
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- 80025179 date "1981".
- 80025180 date "1981".
- 80025183%2F%2Fr852 date "1981".
- 80025186%2F%2Fr83 date "1981".
- 80025189 date "1981".
- 80025190 date "1981".
- 80025191%2F%2Fr91 date "1981".
- 80025193 date "1981".
- 80025195%2F%2Fr862 date "1981".
- 80025196 date "1981".
- 80025197 date "1981".
- 80025198 date "1981".
- 80025199 date "1981".
- 80025200%2F%2Fr85 date "1981".
- 80025201 date "1981".
- 80025202 date "1981".
- 80025203%2F%2Fr88 date "1981".
- 80025204%2F%2Fr862 date "1981".
- 80025205%2F%2Fr82 date "1981".
- 80025206%2F%2Fr85 date "1981".
- 80025208%2F%2Fr962 date "1981".
- 80025209 date "1981".
- 80025210 date "1981".
- 80025211 date "1981".
- 80025212%2F%2Fr85 date "1981".
- 80025213%2F%2Fr83 date "1981".
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- 80025217%2F%2Fr88 date "1981".
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- 80025222 date "1981".
- 80025223 date "1981".
- 80025224 date "1981".
- 80025225%2F%2Fr89 date "1981".
- 80025227 date "1981".
- 80025228%2F%2Fr84 date "1981".
- 80025233 date "1981".
- 80025234 date "1981".
- 80025235%2F%2Fr85 date "1981".
- 80025236 date "1981".
- 80025237 date "1981".
- 80025239 date "1981".
- 80025240%2F%2Fr88 date "1981".
- 80025241 date "1981".
- 80025242 date "1981".
- 80025244%2F%2Fr943 date "1981".
- 80025245 date "1981".
- 80025246 date "1981".
- 80025248 date "1981".
- 80025249 date "1981".
- 80025251 date "1981".
- 80025252 date "1981".
- 80025254 date "1981".
- 80025255 date "1981".
- 80025256 date "1981".
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- 80025258 date "1981".
- 80025260 date "1981".
- 80025261 date "1981".
- 80025262%2F%2Fr962 date "1981".
- 80025263 date "1981".
- 80025264%2F%2Fr863 date "1981".
- 80025265%2F%2Fr84 date "1981".
- 80025266%2F%2Fr92 date "1981".
- 80025268 date "1981".
- 80025269 date "1981".
- 80025270%2F%2Fr89 date "1981".
- 80025272 date "1981".
- 80025274 date "1981".