TY  - BOOK
AU  - Risk,Thomas Marion
TI  - Principles and practices of teaching in secondary schools
AV  - LB1607 .R5 1958
U1  - 373.1/3 
PY  - 1958///
CY  - New York
PB  - American Book Co.
KW  - Education
KW  - Experimental methods
KW  - Local
KW  - Educational psychology
KW  - Education, Secondary
ER  -