The Encyclopedia of Distance Learning offers the most comprehensive coverage of the issues, concepts, trends, and technologies of distance learning. Over 400 international contributors from over 35 countries have provided extensive coverage of topics such as workforce training, accessingeducation, digital divide, and the evolution of distance and online education into a multibillion dollar enterprise. This 4-volume set encyclopedia is edited by leading international experts with multiple yearsof professional and academic experience in the field. With more than 2,000 terms and definitions and over 6,000 additional references, this authoritative 4-volume encyclopedia is considered the foremost reference source for the latest understanding, discoveries, and research in the fieldof distance learning.