TY  - BOOK
AU  - Cheah,Kooi Guan
TI  - Learning at a distance: from principles to practices 
SN  - 9838612758
PY  - 2004///
CY  - Penang
PB  - Penerbit USM
KW  - Distance education
KW  - Malaysia
KW  - Education
N1  - Includes index
ER  -