TY  - BOOK
AU  - Cohen,Louis
TI  - Educational research in classrooms and schools : : a manual of materials and methods
SN  - 0063180472
AV  - LB1028.E315 
PY  - 1976///
CY  - London
PB  - Harper and Row Publishers
KW  - Educational research
N1  - Includes index
ER  -