"timmers, shanon . "
the use of media for distance education: / shanon.. timmers - 1 ed. - uk : eamic publisher 1990. - "ix, 193p.; 27 cm."
9971-905-40-x
--
371. 33 tra
the use of media for distance education: / shanon.. timmers - 1 ed. - uk : eamic publisher 1990. - "ix, 193p.; 27 cm."
9971-905-40-x
--
371. 33 tra