Descripción
Publicado:Began with: Vol. 1, no. 1 (fall 1977); ceased with: vol. 11, no. 4 (1988)
Frecuencia de Publicación:Quarterly, <1978>-1988
Formato:Master and use copy. Digital master created according to Benchmark for Faithful Digital Reproductions of Monographs and Serials, Version 1. Digital Library Federation, December 2002.
ISSN:23313978
Publicación relacionada:Merged with: Educational communication and technology, to form: Educational technology research and development.