Show 10 5 10 15 20 50 100 250 Sort by year (new to old) Actions Download search results Subscribe to news feed Your filters: cql: parent exact "Research in relation to new develop¬ments in distance education materials" Add to list Book Chapter Research in relation to new developments in distance education materials: An introduction Martin Valcke (UGent) and F LOCKWOOD (1993) Research in relation to new develop¬ments in distance education materials. p.1-6