Annual report of the Librarian of Congress: for the fiscal year ending 30 September 1992
Library of Congress
Library of Congress , 1994
 Buku Teks
Annual report of the librarian of congress 1990
Library of Congress; edited by James W. Mc. Chung
Library of Congress, 1991
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Annual report 1986 of the Librarian of Congress
Library of Conggress , 1987
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Annual report 1985 of the Librarian of Congress
Library of Congress , 1986
 Buku Teks
Annual report 1987 of the librarian of congress
Library of Conggress 1988, 1988
 Buku Teks
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