Elliot, Sergio.
Distance education systems / Sergio Elliot. - Rome : FAO of the United Nations, 1990. - iv, 73 p. : ill - FAO economic and social development paper ; 67 .
9251024480
90074142
Distance education--Methodology.
Correspondence schools and courses.
University extension.
Distance education systems / Sergio Elliot. - Rome : FAO of the United Nations, 1990. - iv, 73 p. : ill - FAO economic and social development paper ; 67 .
9251024480
90074142
Distance education--Methodology.
Correspondence schools and courses.
University extension.