Bradford's Law is presented as an observation made from the outcome of searching, rather than a mathematical development. The organization and presentation of search data is explained. Potential applications of Bradford's Law are discussed. New findings are presented which show the relationship...

A study of 266 little‐known technical house journals in the US, UK and France is described. Methods of journal selection, location, and bibliographic control are discussed. A sample of technical articles from the journals was searched in abstracting and indexing services to determine their...

Scientific writings age; individual documents, issues or volumes of scientific journals are, eventually, less valued and less used with the passage of time. Long periods of time, say more than several decades, render portions of the literature obsolete, and ‘aging’ is evident. However,...