Borg,, Walter R.
Educational research : an introduction / Walter R. Borg, Meredith Damien Gall
Educational research : an introduction / Walter R. Borg, Meredith Damien Gall
. - 5th ed
. - New York : Longman, cop. 1989
. - XXXII, 939 p. 25 cm
0-8013-0334-6 Encadernado
37.012