Matches in Library of Congress for { ?s ?p 1981. }
- 80020689 date "1981".
- 80020693 date "1981".
- 80020696 date "1981".
- 80020700 date "1981".
- 80020704 date "1981".
- 80020707%2F%2Fr92 date "1981".
- 80020708%2F%2Fr97 date "1981".
- 80020711%2F%2Fr902 date "1981".
- 80020717 date "1981".
- 80020718 date "1981".
- 80020719%2F%2Fr84 date "1981".
- 80020720%2FMN date "1981".
- 80020721 date "1981".
- 80020724%2F%2Fr89 date "1981".
- 80020726 date "1981".
- 80020728 date "1981".
- 80020729 date "1981".
- 80020731 date "1981".
- 80020734 date "1981".
- 80020736 date "1981".
- 80020742 date "1981".
- 80020743 date "1981".
- 80020744 date "1981".
- 80020747%2F%2Fr85 date "1981".
- 80020748 date "1981".
- 80020750 date "1981".
- 80020756%2F%2Fr91 date "1981".
- 80020758 date "1981".
- 80020763 date "1981".
- 80020764 date "1981".
- 80020765 date "1981".
- 80020772%2F%2Fr922 date "1981".
- 80020774 date "1981".
- 80020775%2F%2Fr83 date "1981".
- 80020777 date "1981".
- 80020778%2F%2Fr86 date "1981".
- 80020784 date "1981".
- 80020785 date "1981".
- 80020787%2F%2Fr923 date "1981".
- 80020788 date "1981".
- 80020792%2F%2Fr93 date "1981".
- 80020793 date "1981".
- 80020795%2F%2Fr893 date "1981".
- 80020796 date "1981".
- 80020798 date "1981".
- 80020800 date "1981".
- 80020801 date "1981".
- 80020802 date "1981".
- 80020803%2F%2Fr964 date "1981".
- 80020807%2F%2Fr94 date "1981".
- 80020808 date "1981".
- 80020811 date "1981".
- 80020812 date "1981".
- 80020813 date "1981".
- 80020814 date "1981".
- 80020817 date "1981".
- 80020818%2F%2Fr97 date "1981".
- 80020819 date "1981".
- 80020820 date "1981".
- 80020823 date "1981".
- 80020828%2F%2Fr82 date "1981".
- 80020830 date "1981".
- 80020831 date "1981".
- 80020832 date "1981".
- 80020833 date "1981".
- 80020834 date "1981".
- 80020835 date "1981".
- 80020837%2F%2Fr83 date "1981".
- 80020841 date "1981".
- 80020846%2FMN date "1981".
- 80020847 date "1981".
- 80020848 date "1981".
- 80020852 date "1981".
- 80020853 date "1981".
- 80020854 date "1981".
- 80020858%2F%2Fr932 date "1981".
- 80020859 date "1981".
- 80020862 date "1981".
- 80020863 date "1981".
- 80020866 date "1981".
- 80020868%2F%2Fr923 date "1981".
- 80020870 date "1981".
- 80020871 date "1981".
- 80020872%2F%2Fr95 date "1981".
- 80020873 date "1981".
- 80020875 date "1981".
- 80020877 date "1981".
- 80020878 date "1981".
- 80020879 date "1981".
- 80020881 date "1981".
- 80020882%2F%2Fr903 date "1981".
- 80020883 date "1981".
- 80020884 date "1981".
- 80020885 date "1981".
- 80020886 date "1981".
- 80020887 date "1981".
- 80020888 date "1981".
- 80020890%2F%2Fr85 date "1981".
- 80020891 date "1981".
- 80020893 date "1981".