TY  - BOOK
AU  - Comber L C
AU  - Keeves John P
TI  - Science education in nineteen countries: an empirical study 
SN  - 0470166827
AV  - Q181 
U1  - 507/.12 
PY  - 1973///
CY  - New York
PB  - Wiley
KW  - Science
KW  - Study and teaching Secondary
KW  - Scientific surveys
N1  - "A Halsted Press book."; Bibliography: p. 402-403
ER  -