Русско-англо-русский юридический словарь

Some institutions use the term "extramural study" for what others call "distance learning"—that is, teaching and learning by means of Web connections to the classroom and to videos of lectures. (Merriam-Webster Dictionary)

Correspondence study has been designed to give everyone who cannot attend the University of Arkansas an opportunity to get some of the advantages for instruction and culture which may be a help to him. Through correspondence study the University offers everyone an excellent opportunity to obtain a degree. (Announcement of the Correspondence Study Department)

Study by correspondence is a form of adult education: it is normally done part-time by people who have a job to do during the day. (Guidance in the Classroom by Niels Lindhard)