While the basic tenets of indexing and abstracting remain the same as in previous decades, the evolution of information and communication technology in the 21st century necessarily changes many aspects of the use--and organization--of information in society. This fourth edition of Introduction to Indexing and Abstracting examines the primary tools for organizing information, addressing fundamental concepts such as the nature of information, the organization of information, vocabulary control, types of indexes and abstracts, evaluation of indexing, and the use of the latest technologies. The book presents information in four sections that covers topics in a logical, sequential order: Foundations, Applications, Techniques, and Professional Practice. A unique resource that covers all the areas of indexing and abstracting in the digital information age, this text will benefit practicing librarians and indexers, students of library and information science, and educators in the area of information organization, as well as those considering indexing and abstracting as a career option.