Maurice B. Line. 'Universal Availability of Publications and developing countries'. Papers of theIFLA/Unesco Pre-session Seminar for Librarians from Developing Countries, Antwerp, 1977.
2.
to be published by Unesco.
3.
Maurice B. Line . 'Universal Availability of Publications'. Unesco bulletin for libraries, 31 (3) May/June 1977: 142-151.
4.
Ibid.
5.
Dorothy Anderson.'Universal Bibliographic Control and the national bibliography'. Proceedings of the IFLA Worldwide Seminar... 1976 . Seoul: Korean Library Association , 1976, pp. 179-188.