TY  - BOOK
AU  - RISK (T M)
TI  - Principles and practices of teaching in secondary schools
U1  - 370/70 
PY  - 1947///
CY  - New York
PB  - American Book Co.
KW  - teaching
KW  - secondary
KW  - schools
KW  - Principles
KW  - practices
KW  - of
KW  - in
KW  - and
ER  -