TY  - BOOK
AU  - Cohen,Louis
AU  - Manion,Lawrence
TI  - Research methods in education
SN  - 0856649171 :
AV  - LB1028 .C572
U1  - 370.72 19
PY  - 1980///
CY  - London
PB  - Croom Helm
KW  - Education
KW  - Research
N1  - Includes index; Bibliography: p. 310-321
ER  -