Educational research
Gay, L.R.
Educational research : competenices for analysis and applitcations / L.R. Gay, Peter Airasian - 7th.ed. - Upper Saddle River, N.J. : Merril Prentice Hall, , 2003 - xvii, 605p. : il. ; 26 cm. + 2 discos ópticos para computadora (4 3/4 in)
0130994634
Educación--- Investigación
LB1028 / G39 2003
Educational research : competenices for analysis and applitcations / L.R. Gay, Peter Airasian - 7th.ed. - Upper Saddle River, N.J. : Merril Prentice Hall, , 2003 - xvii, 605p. : il. ; 26 cm. + 2 discos ópticos para computadora (4 3/4 in)
0130994634
Educación--- Investigación
LB1028 / G39 2003