1. The periodical literature of geography;Aiyepeku;Libri,1972
2. Bibliometric and documentation characteristics of geographical literature on Nigeria, 1901–1970;Aiyepeku,1973
3. The languages and format of geographical literature: a comparative study;Aiyepeku;International Library Review,1973
4. Information services and the structure of knowledge in the social sciences;Brittain;International Social Science Journal,1979
5. Geographical literature: size, growth and characteristics;Chak,1978