Research methods in education /
Cohen, Louis. ,
Research methods in education / Louis Cohen, Lawrence Manion and Keith Morrison. - 5th ed. - xvi, 446 pages : illustrations ; 25 cm.
0415195411
Education --Research.
Education --Research--Great Britain.
LB1028 / .C63 2000
Research methods in education / Louis Cohen, Lawrence Manion and Keith Morrison. - 5th ed. - xvi, 446 pages : illustrations ; 25 cm.
0415195411
Education --Research.
Education --Research--Great Britain.
LB1028 / .C63 2000