Thread increasingly surrounded by darkness - the illuminated thread
To quote just one source, in the Berlin Declaration presented at the Berlin
European ..... was already indicated as early as 1972 (Faure's report, see
Dziewulak 2010:155). ...... Frequently, e-learning courses include mainly
exercises to be solved .... 2007, telc Examination Regulations, Examination
Guide for LCCI Centres).