TY  - BOOK
AU  - Williams,Marcia L.
AU  - Covington,Barbara
AU  - Paprock,Kenneth
TI  - Distance learning: the essential guide 
SN  - 0761914412
AV  - LC5805 .W55 1999
PY  - 1999///
CY  - Thousand Oaks, Calif.
PB  - Sage
KW  - Distance education
KW  - United States
KW  - Telecommunication in education
N1  - Includes bibliographical references (p. 157-159) and index
UR  - http://www.loc.gov/catdir/enhancements/fy0656/98233173-t.html
UR  - http://www.loc.gov/catdir/enhancements/fy0656/98233173-d.html
ER  -