TY  - BOOK
AU  - Naidu, P. Ch. Appala  .
TI  - Feedback methods and student performance / 
SN  - 81-8356-284-1
U1  - T:4,3 
PY  - 2007///
CY  - New Delhi : 
PB  - Discovery Publishing House , 
KW  - Education- Student performance
ER  -