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What is information? Concept of information in specialized references and from some librarianship expertsʹ point of view

In this article definitions from information concept in specialized references and from some librarianship experts have been presented. The term `informationʹ has been commonly used after the invention of printing press. This term has plenty definitions and meanings in reference sources, including: can formally and informally be exchanged, decreases doubts, counted as goods and processes, located in a range between row data and knowledge.