TY  - BOOK
AU  - Cohen,Louis,1928-
TI  - Educational research in classrooms and schools : a manual of materials and methods
SN  - 0063180472
U1  - 370.78 
PY  - 1976///
CY  - London
PB  - Harper & Row Publishers
KW  - Education -- Research
KW  - Éducation -- Recherche
KW  - Einführung
ER  -