Distance learning : the essential guide - Williams, Marcia L. 4 0 16; Paprock, Kenneth,;Covington, Barbara; 5 (Thousand Oaks, California : SAGE Publications, 1999)
Includes bibliographical references and index.
Professional.
Keywords: 2 -- 0; 6; Distance education;Telecommunication in education. -- United States. -- 20; 20; 2