TY  - BOOK
AU  - Siddiqui, Mujibul Hasan
TI  - Encyclopaedia of educational technology Vol.4: Distance learning Technologies in education
SN  - 978-81-7648-571-3
U1  - R371.33 
PY  - 2013///
CY  - New Delhi
PB  - APH Publishing Corporation
N2  - Distance learning in 21st century
ER  -