Matches in Library of Congress for { ?s ?p 1981. }
- 80041837 date "1981".
- 80041838 date "1981".
- 80041844 date "1981".
- 80041845 date "1981".
- 80041846 date "1981".
- 80041847 date "1981".
- 80041849%2F%2Fr84 date "1981".
- 80041858%2F%2Fr933 date "1981".
- 80041859 date "1981".
- 80041860 date "1981".
- 80041861 date "1981".
- 80041863 date "1981".
- 80041864 date "1981".
- 80041865 date "1981".
- 80041867%2F%2Fr84 date "1981".
- 80041868%2F%2Fr922 date "1981".
- 80041869%2F%2Fr90 date "1981".
- 80041871 date "1981".
- 80041885 date "1981".
- 80041887 date "1981".
- 80041891 date "1981".
- 80041893 date "1981".
- 80041898 date "1981".
- 80041901 date "1981".
- 80041902 date "1981".
- 80041906%2F%2Fr86 date "1981".
- 80041907 date "1981".
- 80041913 date "1981".
- 80041914%2F%2Fr88 date "1981".
- 80041915 date "1981".
- 80041916 date "1981".
- 80041917%2F%2Fr95 date "1981".
- 80041920%2F%2Fr97 date "1981".
- 80041929 date "1981".
- 80041930%2F%2Fr933 date "1981".
- 80041931 date "1981".
- 80041934 date "1981".
- 80041935 date "1981".
- 80041936 date "1981".
- 80041937%2F%2Fr86 date "1981".
- 80041940%2F%2Fr91 date "1981".
- 80041941%2F%2Fr92 date "1981".
- 80041942 date "1981".
- 80041944 date "1981".
- 80041947%2F%2Fr91 date "1981".
- 80041948%2F%2Fr892 date "1981".
- 80041949 date "1981".
- 80041950 date "1981".
- 80041951 date "1981".
- 80041953 date "1981".
- 80041954 date "1981".
- 80041955 date "1981".
- 80041956 date "1981".
- 80041957 date "1981".
- 80041958%2F%2Fr925 date "1981".
- 80041959 date "1981".
- 80041961 date "1981".
- 80041962 date "1981".
- 80041964 date "1981".
- 80041965%2F%2Fr85 date "1981".
- 80041966%2F%2Fr92 date "1981".
- 80041967 date "1981".
- 80041968 date "1981".
- 80041972 date "1981".
- 80041975 date "1981".
- 80041976 date "1981".
- 80041977 date "1981".
- 80041978%2F%2Fr922 date "1981".
- 80041980 date "1981".
- 80041982%2F%2Fr86 date "1981".
- 80041984 date "1981".
- 80041985%2F%2Fr982 date "1981".
- 80041986 date "1981".
- 80041987 date "1981".
- 80041988 date "1981".
- 80041989 date "1981".
- 80041991 date "1981".
- 80041994 date "1981".
- 80041995 date "1981".
- 80041999 date "1981".
- 80042001 date "1981".
- 80042002 date "1981".
- 80042006 date "1981".
- 80042009 date "1981".
- 80042010 date "1981".
- 80042012 date "1981".
- 80042013 date "1981".
- 80042016 date "1981".
- 80042017%2F%2Fr894 date "1981".
- 80042018%2F%2Fr84 date "1981".
- 80042019 date "1981".
- 80042021 date "1981".
- 80042023 date "1981".
- 80042024 date "1981".
- 80042025 date "1981".
- 80042026 date "1981".
- 80042028%2F%2Fr942 date "1981".
- 80042030 date "1981".
- 80042031 date "1981".
- 80042032 date "1981".