Williams, Marcia L
Distance learning : the essential guide /
Marcia L. Williams, Kenneth Paprock, Barbara Covington.
- Thousand Oaks, Calif. : Sage Pub., 1999.
- [x], 166 p. : diagrs.
Bibliography : p. 157-159.
0761914420 (pbk.)
Distance education--United States.
Telecommunication in education.
Education, Distance--Methods.
Education technolohy--Methods.
LC5805 / W55