TY  - BOOK
AU  - Williams, Marcia L.
AU  - Paprock, Kenneth,;Covington, Barbara,
ED  - 
ED  - 
ED  - 
ED  - 
TI  - : the essential guide 
SN  - 0761914420 (paperback)
SN  - 2
PY  - 1999///.;copyright 1999.46
CY  - Thousand Oaks, California
PB  - SAGE Publications
KW  - 
KW  - 2
KW  - 0
KW  - 6
KW  - 20
KW  - Distance education;Telecommunication in education
KW  - United States
N1  - Includes bibliographical references and index; 5; Professional
ER  -