Matches in Library of Congress for { ?s ?p 1981. }
- 80070537%2F%2Fr93 date "1981".
- 80070539 date "1981".
- 80070541%2FMN%2Fr952 date "1981".
- 80070543 date "1981".
- 80070545 date "1981".
- 80070546%2F%2Fr883 date "1981".
- 80070547%2F%2Fr962 date "1981".
- 80070548 date "1981".
- 80070550%2F%2Fr85 date "1981".
- 80070551 date "1981".
- 80070552%2F%2Fr85 date "1981".
- 80070553 date "1981".
- 80070554 date "1981".
- 80070555%2F%2Fr85 date "1981".
- 80070557 date "1981".
- 80070558 date "1981".
- 80070561 date "1981".
- 80070569 date "1981".
- 80070570 date "1981".
- 80070583%2F%2Fr92 date "1981".
- 80070586%2F%2Fr89 date "1981".
- 80070589 date "1981".
- 80070590 date "1981".
- 80070592 date "1981".
- 80070593%2F%2Fr91 date "1981".
- 80070594%2F%2Fr842 date "1981".
- 80070598%2F%2Fr91 date "1981".
- 80070599 date "1981".
- 80070600%2F%2Fr82 date "1981".
- 80070601%2F%2Fr89 date "1981".
- 80070607 date "1981".
- 80070608 date "1981".
- 80070610 date "1981".
- 80070612 date "1981".
- 80070617 date "1981".
- 80070618 date "1981".
- 80070619%2F%2Fr922 date "1981".
- 80070620%2F%2Fr923 date "1981".
- 80070621 date "1981".
- 80070622 date "1981".
- 80070623%2F%2Fr912 date "1981".
- 80070628 date "1981".
- 80070629 date "1981".
- 80070630 date "1981".
- 80070631 date "1981".
- 80070632%2F%2Fr82 date "1981".
- 80070633%2F%2Fr913 date "1981".
- 80070635 date "1981".
- 80070638%2F%2Fr84 date "1981".
- 80070639%2F%2Fr93 date "1981".
- 80070640 date "1981".
- 80070641 date "1981".
- 80070642 date "1981".
- 80070644 date "1981".
- 80070650%2F%2Fr882 date "1981".
- 80070651 date "1981".
- 80070655%2F%2Fr902 date "1981".
- 80070656 date "1981".
- 80070659 date "1981".
- 80070666 date "1981".
- 80070668 date "1981".
- 80070669%2F%2Fr84 date "1981".
- 80070672 date "1981".
- 80070674 date "1981".
- 80070675%2F%2Fr92 date "1981".
- 80070677 date "1981".
- 80070678 date "1981".
- 80070680%2F%2Fr94 date "1981".
- 80070681%2F%2Fr842 date "1981".
- 80070682 date "1981".
- 80070692 date "1981".
- 80070694%2F%2Fr943 date "1981".
- 80070697 date "1981".
- 80070698%2F%2Fr89 date "1981".
- 80070712 date "1981".
- 80070713 date "1981".
- 80070714 date "1981".
- 80070716%2FMN%2Fr942 date "1981".
- 80070718 date "1981".
- 80070721%2F%2Fr92 date "1981".
- 80070722%2F%2Fr924 date "1981".
- 80070729 date "1981".
- 80070731 date "1981".
- 80070732 date "1981".
- 80070733 date "1981".
- 80070741%2F%2Fr94 date "1981".
- 80070744 date "1981".
- 80070755 date "1981".
- 80070756 date "1981".
- 80070757 date "1981".
- 80070758 date "1981".
- 80070760 date "1981".
- 80070764 date "1981".
- 80070765 date "1981".
- 80070767 date "1981".
- 80070768 date "1981".
- 80070771%2F%2Fr85 date "1981".
- 80070773 date "1981".
- 80070774 date "1981".
- 80070775 date "1981".