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
Annual report of the Librarian of Congress 1995
Library of Congress
Library of Congress , 1996
Buku Teks
Annual report 1986 of the Librarian of Congress
Library of Conggress, 1987
Buku Teks
Annual report of the Librarian of congress for the fiscal year ending 30 September 1994
Library of Congress , 1995
Buku Teks