The study identifies 621 authors who contributed 1,423 periodical articles and monograph publications to the geographical literature on Nigeria between 1901 and 1970. Publications/author relationship shows a perfect Bradford distribution comprising fifty‐three core authors having each six...

World periodical literature output in geography from 1970 to 1973 and the output concerning the USA, British Isles, France, and Germany for the same period are presented in three sets of Bradford‐Zipf bibliographs, while the verbal formulation of the law is translated into seven tables based...