Research methods in education /
Cohen, Louis. ,
Research methods in education / Louis Cohen, Lawrence Manion and Keith Morrison. - 6th ed. - xviii, 638 pages : illustrations ; 26 cm.
0415374103 9780415374101 0415368782 978041536878
Education --Research.
Education --Research--Great Britain.
LB1028 / .C63 2007
Research methods in education / Louis Cohen, Lawrence Manion and Keith Morrison. - 6th ed. - xviii, 638 pages : illustrations ; 26 cm.
0415374103 9780415374101 0415368782 978041536878
Education --Research.
Education --Research--Great Britain.
LB1028 / .C63 2007