TY  - BOOK
AU  - Perera, Lal 
AU  - Navaratne, A. A. 
TI  - A profile of Achievement of Grade foure Pupils : Northern Province 
SN  - 9551187032
PY  - 2004///
CY  - Colombo
PB  - NEREC
KW  - Research Report
ER  -