TY  - RPRT
TI  - Distance education. Part 1. Conceptualization and development.
AU  - L Piterman
AU  - M Parer
AU  - P Schattner
AU  - L McCall
PY  - 2000
UR  - https://pubmed.ncbi.nlm.nih.gov/10902216/
ID  - 10902216
ER  -