Major themes in library science for 1975 are discussed in depth in a collection of nine writings by ten prominent library figures from the United States, Spain, and France. The articles are titled: (1) international information systems; (2) national planning for library and information services; (3) statistics that describe libraries and library service; (4) coordination of technical services; (5) trends in library education--United States; (6) technologies of education and communication; (7) audiovisual services in libraries; (8) sound recordings; and (9) joint academic libraries. All articles have references and the book has author and subject indexes. (LS)