TY  - BOOK
AU  - Erdos, Renee F.
TI  - Establishing an institution teaching by correspondence
SN  - 9231013076
U1  - 374.4 
PY  - 1975///
CY  - Paris
PB  - The Unesco Press
KW  - Correspondence schools and courses
N1  - "A study prepared for the International Educational Reporting Service."
ER  -