Introduction to research in education /
Ary, Donald
Introduction to research in education / Donald Ary, Lucy Cheser Jacobs, Asghar Razavieh. - 2a ed. - New York : Holt, Rinehart and Winston, 1979. - 388 p.
0030206065
Educación--Investigación
Introduction to research in education / Donald Ary, Lucy Cheser Jacobs, Asghar Razavieh. - 2a ed. - New York : Holt, Rinehart and Winston, 1979. - 388 p.
0030206065
Educación--Investigación