Cohen, Louis
Research methods in education / Louis Cohen, Lawrence Manion - London : Routledge, 1994 - 414 p. ; 23 cm.
0415102359
Education--Research
Giáo dục--Nghiên cứu
370.72 / R432
Research methods in education / Louis Cohen, Lawrence Manion - London : Routledge, 1994 - 414 p. ; 23 cm.
0415102359
Education--Research
Giáo dục--Nghiên cứu
370.72 / R432
