International aspects of librarianship / ed. by Leon Carnovsky. University of Chicago. Graduate Library School. Carnovsky, Leon, ed. Library cooperation. 020 CAI Papers presented before the eighteenth annual conference of the Graduate Library School of the University of Chicago. Chicago : U.P., 1954. 1954. 1954 Text vii, 124p. eng Papers ; 1953 Studies in library science University of Chicago. Graduate Library School. Conference. Papers ; 1953.