Mass education. Studies in adult education and teaching by correspondence in some developing countries. Ed. by Lars-Olof Edstrom, Renee Erdos and Roy Prosser. [Publ. by] the Dag Hammarskjold Foundation.
Contributor(s): Edstrom, Lars Olaf, 1933- | Erdos, Renee F | Prosser, Roy | Dag Hammarskjold Foundation.
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