Educational research: competencies for analysis and application
Gay, L.R.
Educational research: competencies for analysis and application - 3a ed. - Singapur : Merrill, 1990 - 569 p. ; 24 cm.
0-02-946117-0
Educación ---Investigación
LB 1028 / G37 1990
Educational research: competencies for analysis and application - 3a ed. - Singapur : Merrill, 1990 - 569 p. ; 24 cm.
0-02-946117-0
Educación ---Investigación
LB 1028 / G37 1990